Sealy Alford Advantage Mattress Rated 4.9/5 based on 402 customer reviews
Sealy Alford Advantage Mattress
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Sealy Alford Advantage Mattress

sleep trial mattress Firm mattresses
£299.95
sleeping cat
12p per sleep based on average mattress lifespan
Single
Small Double
Double
King Size
Super King
With Divan Bed Set
With Ottoman Bed Set
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Pros & Cons

Here we collect tests, guides and product reviews so that you can create a picture of what others think about the product. This analysis and review is based on my experience and a decade of industry insight.

Sealy have been on a bit of a frenzy to redo much of their range in 2022 and one of the victims of this was the previous Sealy Millionaire mattress. Now rebranded as the Alford Advantage, it comes with a few new tricks that might satisfy your needs.

One of Sealy's most popular mattresses which offers great orthopaedic support through the firm support layer in the product.

Well reviewed and highly recommended.

Unlikely to find equivalent orthopaedic support at this price point.

Impressive 5 year guarantee which rivals far more expensive products.

Standard sprung tensions don't perform as well as pocket springs and typically have poorer edge support. They can still provide good body contouring and often offer better value than pocket springs.

Read why our sleep experts loved it ›

Who is it best for? powered by SnoozeScore

In our experience, the materials and construction that go into this product can make it suitable for the following people.

Back sleeping and stomach sleeper icon
For back and stomach sleepers
Additional support helps these positions
Toss and turn icon
Good for those who toss and turn
Materials like memory foam can restrict movement.
snooze score logo Still not sure if the Sealy Alford Advantage Mattress is suitable for you? Answer 4 simple questions with our quiz Take Suitability Quiz

Why our sleep experts loved it

Your mattress needs to be comfortable, supportive and have a quality you can trust. That’s why so many manufacturers offer great beds that meet all your needs. If you’re looking for the best mattress to suit your lifestyle and budget, the Sealy Alford Advantage Mattress could be the right fit. These top-rated mattresses are made with quality components and feature unique spring systems and comfort layers that you won't find from other brands. These materials provide ultimate support and comfort at an affordable price.

The Sealy Alford Advantage is a medium depth, firm mattress designed to support the back and also to promote good posture. With a new PostureTech Core Support Spring system, this mattress reduces the pressure points that can cause pain in the shoulders and hips, and is double-sided so it can be flipped to extend its life. 

This mattress has been manufactured at Sealy's UK factory, which holds Good Manufacturing Practice and ISO9001 accreditation

.The mattress also benefits from PostureTech Core Support - a strong, resilient core of spring units designed to provide support to the natural contours of your body - and an Orthopaedic Support Rating. It is 28cm deep and has a firm feel which will suit buyers that need a bit more support and are primary back sleepers. Side sleepers should perhaps consider a slightly less firm product as the sinkage may not be suitable.

The mattress is made up of a Damask cover that is handcrafted in the UK using a traditional open coil spring system. It is finished with turning handles for easy rotation and a 5 year guarantee.

Reviews for the Sealy Alford are strong with over 700 reviews to date, although some of these were from when the product was known as the Millionaire which featured a slightly different cover and design. Component wise however, the Alford is the same and the customers love it with many commenting on the great back support and low price point. There were a few concerns from others that the product was a bit too firm, however we known firmness is subjective and will naturally vary customer to customer.

Why you can trust WantMattress We spend hours testing (and/or researching) every product or service we review, so you can be sure you’re buying the best. Find out more about how we test.

How does it feel?

Personalised feel depends on bodyweight. Adjust your weight below to get an indication of how the Sealy Alford Advantage Mattress may feel.

weight description image
Quantitative Measurements KPI question mark
Of The Sealy Alford Advantage Mattress
Here's how the product performs based on the materials and composition when compared to other products of similar price point. These measurements are produced using a combination of specification-heavy algorithmic data points and our own hands on experience.

Quantitative Measurements KPI question mark

Here's how the product performs based on the materials and composition when compared to other products of similar price point. These measurements are produced using a combination of specification-heavy algorithmic data points and our own hands on experience.

Suitability

*Assuming average weight, suitability will vary dependant on body type, use the quiz above for a more tailored guide.
  • Back Sleepers
    ★★★★★
    ★★★★★
  • The amount of support offered from a mattress will vary depending on the firmness of the tension and the type of support layer used. Based on a person of average build.
  • Side Sleepers
    ★★★★★
    ★★★★★
  • If you sleep on your side you typically need a supportive tension that is not too firm, nor too soft. This is because your hips and shoulders need adequate sinkage.
  • Stomach Sleepers
    ★★★★★
    ★★★★★
  • Stomach sleepers need a reasonable amount of tension in the base support layer to adequately offer body contouring and help prevent aches and pains. Results will vary based on your build.

Performance

  • Stability
    ★★★★★
    ★★★★★
  • Depending on the type of support layer in place can have an impact on stability, edge to edge support and roll together prevention. Pocket springs of a firmer tension will have better stability than open coil soft tension, for example.

Ease of Use

  • Turning handles
    ★★★★★
    ★★★★★
  • Mattresses typically need to be rotated frequently and having turning handles can be massively beneficial, particularly in larger sizes which can become fairly heavy.

Odour

  • Initial Odour
    ★★★★★
    ★★★★★
  • Materials in mattresses, particularly memory foam and rolled bed-in-a-box mattresses can have an initial odour, this is typically short term and reduces considerably within 24 hours.
  • Long Standing Odour
    ★★★★★
    ★★★★★
  • Certain materials inside different mattresses can produce a small odour. Typically this is short term rather than long standing but there are minor exceptions.

Brand Rating

  • Overall Brand Rating
    ★★★★★
    ★★★★★
  • This is based on community driven customer reviews tied to product reviews and grouped together at a brand level to produce a score.

Reviews

Let us know your thoughts on a product or view reviews from others. Please note that WantMattress does not verify whether the user has used or purchased the product.

4.92 - 402 reviews

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Verified Buyer
via Mattress Online
5
Although with this mattress it took roughly around a fortnight to get used to the higher firmness level to what my former mattress was as initially I did think it was took firm I discovered that I know prefer this firmness level more. As a regular gym attender (around 5/6 times a week) I used to always suffer from aches and pains, this mattress has helped reduce those. I now very rarely wake up having had a bad night sleep due to discomfort/aches and pains. The support level provided on ones posture is so much more beneficial. The cost of the mattress was a little more than I would normally spend in a mattress but overall I am getting a better nights sleep which is a big plus :D I would highly recommend.
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Verified Buyer
via Mattress Online
5
For under 300 including delivery, this mattress is real value for money. Great support for the back and the top is quite soft so good quality. Wherever you roll on the bed it doesn't seem to sag. Slept on so many bad mattresses in my time so very pleased with this purchase. This is one of those internet gems where you pay a good price and get quality. Not really knowing about Sealy beforehand and then speaking to family members, they have all voiced that Sealy are a very good brand so hoping it will last a number of years.
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Verified Buyer
via Mattress Online
5
Very comfortable, especially now we've added a 2" silent night memory foam topper. It beats the 1,400 Millbrook mattress which it replaced, and had failed after less than five years.Don't let the bargain price put you off...This is a superb value for money mattress.Sealy are the chosen supplier to Holiday Inn in the USA, where we stay often, and always get good sleep. The extra charge for the 2 man delivery is worth every penny. Installed and took packing away. Well done!
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Verified Buyer
via Mattress Online
5
I have had the mattress for about 5 weeks and have found it very comfortable from the start and have had a good night's sleep from the first night. It gives good support and helps alleviate any back ache that results from my work. The mattress is heavy and I would expect most people would need 2 to carry it, though my son did get it upstairs by himself.
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Verified Buyer
via Mattress Online
5
Mattress appears to be OK.But when one has muscular problems around a right hip (complete joint replacement 12 year old),one tries anything to improve ones sleep. It's all in the mind, believing a different mattress would change things. Still get out of bed with pain, but subsides as the day wears on. So curing pain does not come from a new mattress.
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Verified Buyer
via Mattress Online
5
The mattress is super supportive, and it is firm so if most of the time like me sleep on your side I would opt for medium firm mattress, unless you are heavy set person. This mattress is turnable not just rotates. It has turn handles to help with this. It is very thick which make my bed super high to get into (not complaining about that at all).
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Verified Buyer
via Mattress Online
5
After enduring two Simba mattresses that were initially ok but gave me sciatica, this Sealy mattress is definitely heaven sent, firm yet very supportive right up to the edges, Im sleeping very well and putting my socks on in the morning is now a pain free event....look forward to going to bed now!
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Roger
via Mattress Online
5
Have now been using it for about 5 weeks & have found it just right for me--firm but not excessively firm . Was previously getting up in morning with ache in small of the back & shoulders but after 2 days of using the Sealy Alford Advantage mattress the aches disappeared . Very pleased with it
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Verified Buyer
via Mattress Online
5
Fantastic my partner is a brick layer and has had a bad back for years, he said its the most comfortable and supportive mattress he has ever slept on. I love it it is so firm but extremely comfortable, a good night sleep, also the delivery was so efficient and fast. We are very happy customers.
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Verified Buyer
via Mattress Online
5
The springs provide what really is firm support but do have some give in them. Very good value for money for an orthopaedic mattress. Not sure what it's longevity is like as only owned it for 2 months. Would recommend to a friend with a bad back or preference for firm support over comfort.
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Verified Buyer
via Mattress Online
5
Have experienced sciatica for several years, after switching to this mattress approximately a month ago I have not had a single recurrence. This is still early days to say it totally has resolved my issue but I am extremely pleased with this mattress and would not hesitate in recommending it.
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Verified Buyer
via Mattress Online
5
Bought as an identical replacement for the one originally supplied with the Sealy bed we purchased about 8-10 years ago. The springs had lost their firmness especially with my 20st+ weight on them over time. It had proved to be of excellent quality hence the one for one replacement !!!
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Verified Buyer
via Mattress Online
5
I brought my mattress on-line knowing I liked Sealy Products and they have lived up to my expectation's, I have a major back problem so need a bed of this quality but my wife doesn't have the same issue but likes the mattress a lot so everybody's happy thank you.
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Verified Buyer
via Mattress Online
5
My 2nd order of this mattress. Lovely firm mattress with the pillow like top so its soft and comfy while being supportive. Nice depth/height to the mattress too.Surprisingly not too heavy, can flip over on my own. Speedy delivery well packaged with double plastic covers.
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Verified Buyer
via Mattress Online
5
Mattress is comfy but more on softer side than firm . I had to place a topper to make it firmer .you dont like it for first couple of nights or may not get used to of it very soon but after a week or so you might feel improvement in sleep and no body aches in the morning
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Sarah
via Mattress Online
5
The mattress was ordered as an emergency replacement when I had a major back problem. It arrived very quickly, the delivery men were great and brought it upstairs, removing the old one, and this mattress is very comfortable and stable. Exactly what I'd hoped for.
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Verified Buyer
via Mattress Online
5
I bought the same mattress for my spare room. The mattress is comfortable and firm, maybe not as firm as the 1st one which is exactly the same but still has good support. Price was good too. I really did not want to spend over 250 on a mattress.
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Verified Buyer
via Mattress Online
5
Love Sealy mattresses and love my new one.....!!!Only had Sealy mattresses in 40 years .... each has lasted 20 years...Great support for the back....I am a hairdresser so suffer with back problems... these support my back...Have wonderful sleeps.
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Verified Buyer
via Mattress Online
5
Lovely and firm, no more back ache! I would highly recommend this mattress for anyone with a bad back. It is firm and extremely comfortable, no matter how long you stay in bed or your shape or size, or weight, it is great!
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Verified Buyer
via Mattress Online
5
Fantastic mattress, ideal for very heavy people as long as you turn it once a month. Ours has lasted 3 years upto now and still ok. Bought a 2nd one for a relative who needed good back supports. Fab product and will buy again.
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Verified Buyer
via Mattress Online
5
I slept soundly and comfortably but unfortunatey my partner who is alot heavier than me didn't and his back ache started again after a good first couple of weeks. Maybe a firmer mattress would have been better for him.
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Verified Buyer
via Mattress Online
5
Comfortable and good support without being too firm or like a board. Was recommended this by Sealy as the most similar mattress to my previous one. Pleased with it. Like that it is double sided and not too heavy.
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Verified Buyer
via Mattress Online
5
Excellent all round. Very comfortable, marvellous support, attractive appearance and superb value for money.Best night's sleep we've had for years - wish we'd purchased one a long time ago
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Verified Buyer
via Mattress Online
5
Nice and firm mattress, my husband and I have had a great sleep since getting this mattress and he has also noticed that he isn't suffering with as much back pain now. Would definitely recommend.
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Verified Buyer
via Mattress Online
5
Great support, very comfy. Finally replaced my 12 year old Sealy mattress so thought it would be the same, but Ive now realised how worn out my old one was. No more aches or pins needles! Yay!
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Verified Buyer
via Mattress Online
5
For those who are looking for a firm mattress only to find not the case. This one looks good and is nice and firm support. I have tried all sorts and spent a fortune. I would recommend this one.
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Verified Buyer
via Mattress Online
5
Mixed thoughts on mattress, good level of firmness and comfort , support is very good - plus I certainly sleep well and wake with minimal aches and pain which is good. Good purchase for price.
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Verified Buyer
via Mattress Online
5
1. Got a good night sleep after a really long time and the best part is that it is now every night.2. Not only do I get back support I also get support for my shouldersIt has work well for me
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Verified Buyer
via Mattress Online
5
Absolutely love this mattress. I didnt realise how much I needed a new mattress until we got this one. Within a week my daily morning back ache was gone. So comfy and great value for money
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Verified Buyer
via Mattress Online
5
Soft comfy outer layer helps to cushion your bony bits,while the firm mattress supports your back, without making it ache, It would have to be one of the loveliest mattress we have slept on.
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Verified Buyer
via Mattress Online
5
It is the second sealy millionaire we purchased as have moved the old one to the spare bed. NB at 5 years old the previous Sealy Millionaires mattress is still as good as when it was new
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Verified Buyer
via Mattress Online
5
I love this mattress! I have had severe back problems for over 20 years and sleeping has always been disturbed. However the mattress supports me so well I can now sleep through the night!
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Verified Buyer
via Mattress Online
5
Firm and maintains its shape and support giving a good nights sleep, Have had this mattress a month now and shows no signs of at all that it will lose its structural integrity over time
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Verified Buyer
via Mattress Online
5
We have bought several properties over the last few years and this is the third Sealy mattress that we have bought and they have all been even more comfortable than the last one.
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Verified Buyer
via Mattress Online
5
Very supportive mattress. My husband and I both have bad backs, I have had lumbar spine surgery so this was really welcomed! We have both slept much better since buying this.
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Verified Buyer
via Mattress Online
5
The edges are saggy however the centre when laid on is okMy last millionaire lasted 10 years a good solid mattress turned and flipped regularly this one does not tip just turns
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Verified Buyer
via Mattress Online
5
good firm mattress but needed a mattress topper for that extra degree of comfort. Much better that our old memory foam mattress and no back and hip aches since it arrived.
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Verified Buyer
via Mattress Online
5
We were after a firm mattress and one that we can turn over and this provides all that. Very comfy and not too firm just great support for those who suffer from back ache.
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Verified Buyer
via Mattress Online
5
This mattress has vastly improved my back pain in such a short time. Its feels extremely firm at first but literally is super comfortable. I definitely recommend it.
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Verified Buyer
via Mattress Online
5
It's an orthopedic mattress with a difference. While its support your back bones, it's also soft enough to help you drift into a pleasant and restful sleep.
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Verified Buyer
via Mattress Online
5
It's definitely firm which is what I ordered. I was packaged very well with double layer of plastic protective corners on each layer. Double sided with handles.
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Kathryn
via Mattress Online
4
1 Turn and rotate. 2 Two Handles on each side 3 Not too heavy, one person required. 4 comfort 5 Good standard double bed fit 6 Sits well on flat rigid wooden supports
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Verified Buyer
via Mattress Online
5
+ Very good quality+ Very good support+ You can really feel the difference when you were previously using a not so good mattress+ It feels like sleeping in a cloud.
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Verified Buyer
via Mattress Online
5
1 Turn and rotate.2 Two Handles on each side3 Not too heavy, one person required.4 comfort5 Good standard double bed fit6 Sits well on flat rigid wooden supports
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Verified Buyer
via Mattress Online
5
It is for my disabled daughter who struggles with her joints since she has been sleeping in your mattress, she is getting out of bed so much better not stiff.
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Verified Buyer
via Mattress Online
5
Firmness is excellent, supporting my bad back is essential. Every nights sleep has been a comfortable one and now wake up feeling fresh and ready for the day.
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Verified Buyer
via Mattress Online
5
Had a very old sealy mattress, customer services were able to recommend the current equivalent and we were not disapppinted. Even anti-change husband is happy.
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Verified Buyer
via Mattress Online
5
I love it because it keeps it shape there is no sagging I know its an orthopaedic mattress and it is supposed to be firm as it is but it is also very comfy
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Verified Buyer
via Mattress Online
5
Had the same one in a double and it was so comfy. Was a no brainer to get the same again when going for a king size bed!Nice and firm and feel supported.
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Verified Buyer
via Mattress Online
5
This mattress is fantastic. Very comfortable and supportive. I wake up everyday feeling great with no lower back pain. I highly recommend this mattress.
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Verified Buyer
via Mattress Online
5
Absolutely amazing. For bad posture and back aches this bed is perfect. A firm support ensure a good night sleep to allow you to wake up feeling great.
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Verified Buyer
via Mattress Online
5
this is our second sealey millionaire mattress and the best money spent as people say you really can't beat a good nights sleep.very firm mattress.
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Verified Buyer
via Mattress Online
5
Really comfortable firm mattress. I was full of aches and pains before - it's really improved my well being . Highly recommended! A bargain too!!
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Verified Buyer
via Mattress Online
5
Amazing night's sleep really comfortable and.As well as fast on delivery plus Fantastic price's I would fully recommend this company J.Cozens
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Verified Buyer
via Mattress Online
5
The build quality is excellent and you don't over heat like a memory foam mattress. There lots of springs so it has good support for your back.
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Verified Buyer
via Mattress Online
5
Just what I was looking for. The support is amazing and its weight tells of the quality materials used. It has not shifted one bit on the base.
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Verified Buyer
via Mattress Online
5
My last 3 mattresses have been Sealy Millionaire and I wouldnt have anything else. Cushioned yet really supporting, theyre so comfortable.
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Verified Buyer
via Mattress Online
5
Because I've had one of these before, I know it does the job and I don't need to spend ages wading through the alternatives on offer.
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Verified Buyer
via Mattress Online
5
First night laying on a new firm mattressAnd being able to get out of bed with out tomuch trouble, I get back support and a good nights sleep
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Verified Buyer
via Mattress Online
5
Good supportive mattress?not as firm as hoped but very good generally?I would probably recommend the extra firm mattress for back sufferers
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Verified Buyer
via Mattress Online
5
Very firm. I have a bad back and bought to replace a medium mattress. If offers much better support. The handy handles will come in to rotate
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Babs
via Mattress Online
4
Good supportive mattressnot as firm as hoped but very good generallyI would probably recommend the extra firm mattress for back sufferers
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Verified Buyer
via Mattress Online
5
Nice and firm, back is feeling alot better after a month, Took a few weeks to get used to it, but very happy with my mattress, Thank you
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Verified Buyer
via Mattress Online
5
My daughter loves this mattress, it's a good replacement for her old Mulberry one, which was still going strong...she just sized up.
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Verified Buyer
via Mattress Online
5
Very comfortable if you like a firm and supporting mattress. Husband says he's sleeping really well since we bought this mattress.
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Verified Buyer
via Mattress Online
5
I e-mailed Sealy to ask what the equivalent mattress to the one I had. The one I purchased is as good if not better than the old one.
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Barnaby
via Mattress Online
5
My daughter loves this mattress, it's a good replacement for her old Mulberry one, which was still going strong...she just sized up.
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Verified Buyer
via Mattress Online
5
fantastic support. this is a mattress you sleep on not in. sleep has definitely improved over the month we have had this mattress.
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Anonymous
via Mattress Online
3
Not as firm as expected also it appears to dip slightly in the middle. Im waiting to see if it dips further before making contact.
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Verified Buyer
via Mattress Online
5
High quality very comfortable mattress which will I am sure will give a long term of service at a very good value for money price.
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Verified Buyer
via Mattress Online
5
I'm 5'7 and weigh 90KG. This matress is hard and it solved my back problem which was caused by my previous soft mattress.
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Verified Buyer
via Mattress Online
5
Totally love the firmness of the matress. Both my wife and I have severe Back problems, so this new matress is a God send for us
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Verified Buyer
via Mattress Online
5
So solid yet comfortable. This is my second Sealy mattress and would not try anything else. Works wonders for my spinal problems
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Verified Buyer
via Mattress Online
5
As well as giving support and so comfy. The mattress has handles making it easier to turn or move.This Sealy replaced a Sealy
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Verified Buyer
via Mattress Online
5
Fast service. Being both large people . Having a mattress that can be turned over and round will we hope make it last longer.
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Verified Buyer
via Mattress Online
5
This is the second such mattress we have purchased for our holiday cottages and we understand they are extremely comfortable.
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Verified Buyer
via Mattress Online
5
My first Sealy mattress lasted ten years. my replacement is just as good. Extremely firm and comfortable. Highly recommended.
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Verified Buyer
via Mattress Online
5
Not too heavy, easy to turn. Great (sale) price for a Sealy mattress. This will be my 3rd. but 1st purchased from this site.
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Verified Buyer
via Mattress Online
5
Great firm mattress without feeling hard. Bought to replace our Sealy Guardian Ortho from 10 years ago. Just what we wanted.
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Verified Buyer
via Mattress Online
5
Great mattress. Not too firm not too soft. Read a few reviews saying it was too firm but dont agree with them. Just right.
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Steven
via Mattress Online
5
Great mattress. Not too firm not too soft. Read a few reviews saying it was too firm but dont agree with them. Just right.
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Verified Buyer
via Mattress Online
5
After two days sleeping on it, my bad back was reduced 90% and after a week Ive been sleeping better than I had in months
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Verified Buyer
via Mattress Online
5
This is a really comfy mattress, we opted for this as it a less expensive alternative to the Rosetta. Very pleased so far!
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Verified Buyer
via Mattress Online
5
this is one of the most comfortable mattress that I have had it took a few days to settle but it is extremely comfortable.
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Verified Buyer
via Mattress Online
5
The comfort and support . My previouse bed was a Tempur and very expensive, however the Sealy bed is much more comfortable
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Seyed
via Mattress Online
5
I'm 5'7 and weigh 90KG. This matress is hard and it solved my back problem which was caused by my previous soft mattress.
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Verified Buyer
via Mattress Online
5
The mattress is well suited for my elderly mother and myself. It keeps it shape, and you do not sink in to the mattress.
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Verified Buyer
via Mattress Online
5
Firm , although not to firm .Supports in all the right places and adds a little more height on account of the thickness
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Verified Buyer
via Mattress Online
5
Had the smaller version for 2 years, when we got a larger frame we went for the same mattress couldn't be happier!
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Verified Buyer
via Mattress Online
5
Sealy mattresses are the best there is. I have had three and never had a bad one. Just find the one that suits you!
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Verified Buyer
via Mattress Online
5
It took a few nights to get used to the firmness of this mattress but it has greatly reduced my lower back hip pain
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Verified Buyer
via Mattress Online
5
Used the Sealy posturpedic for years bought one for each of our kids worth every penny And where from Yorkshire lol.
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Verified Buyer
via Mattress Online
5
Good firm mattress .Double sided with handles to assist in turning . Using on a firm base with a mattress topper.
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Amanda
via Mattress Online
5
Firm but comfortable looks good and being a deep mattress is great and ideal high for getting in and out of bed.
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Verified Buyer
via Mattress Online
5
I sleep on it like a baby, very comfy and I'm a heavy man over 16 stones. Can honestly recommend to anyone.
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Verified Buyer
via Mattress Online
5
Firm but comfortablelooks good and being a deep mattress is great and ideal high for getting in and out of bed.
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Verified Buyer
via Mattress Online
5
Was exactly what we wanted. Good support but comfortable.Mattress was delivered very quickly after ordering.
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Verified Buyer
via Mattress Online
5
It's a very firm but we'll padded mattress.Good quality It is very firm but that's what I wanted
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Verified Buyer
via Mattress Online
5
Fantastic very supportive for us with our bad backs..Best mattress we have had and we have had 3 in 10 years
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Of The Sealy Alford Advantage Mattress
Brand: Sealy
Retailer: Mattress Online
Delivery Time: Excellent
Delivery Charge: Excellent
Customer Sentiment: Good
Guarantee: Good

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