Sciatica sends pain along the sciatic nerve from the lower back down through the buttock and into the leg, and if you've been sleeping on the wrong mattress it's one of the few conditions where the bed itself can make a bad situation noticeably worse. The nerve runs close to the surface at the hip and glute, so anything that creates pressure at those points pushes directly into the area that's already inflamed.
I've tested mattresses specifically for how different firmness levels and construction types affect lower-back and hip pressure through the night. The right mattress depends heavily on your sleep position and body weight, but there is a reliable starting point that works for most people.
This page is not medical advice. If you have a diagnosed condition causing sciatic symptoms, consult your GP, physiotherapist, or specialist before changing your sleep setup. A mattress can help manage discomfort but it cannot treat the underlying cause.
What makes a mattress good or bad for sciatica
The sciatic nerve is vulnerable where it passes through the piriformis muscle in the buttock and where it exits the lumbar spine. When you lie down, your mattress either holds those areas in a neutral position or it doesn't. Too firm and the hip can't sink in enough, creating a pressure hotspot right over the nerve. You feel that one fast.
Too soft is a subtler problem. The pelvis drops, the lower spine rotates, and the nerve gets pulled tight across the piriformis. Most people don't notice until they wake up stiffer than they went to bed, because it builds through the night as the foam compresses under load.
Medium-firm is where most sciatica sufferers land. A 2015 systematic review published in Sleep Health found that medium-firm mattresses delivered the best results for spinal alignment and sleep quality across lower-back-pain cohorts. Not sciatica specifically, but the biomechanics are close enough that the guidance translates. The NHS recommends a mattress that is "not too soft" for back pain generally, which amounts to the same advice in plainer language.
Construction that works
Pocket springs with a proper comfort layer on top is the construction I recommend most for sciatica. The springs hold the pelvis level, the comfort layer cushions the hip and shoulder pressure points, and the airflow through the spring unit keeps the surface temperature stable - though I should say that airflow matters less for sciatica specifically than it does for hot sleepers, it's a bonus you get with the construction rather than the reason to choose it. When I've tested hybrids against foam-only builds for lower-back and hip pressure, the hybrids consistently perform better at holding spinal alignment without creating new pressure problems.
Latex is the other construction worth looking at. Natural latex is responsive and pushes back quickly when you shift position, which matters more for sciatica than most people think. When the sciatic nerve is irritated, the instinct is to move, and a mattress that makes position changes easier reduces the pain spikes that come from being stuck in one posture. I've slept on Dunlopillo's latex range and the difference in ease of movement compared to dense memory foam is hard to miss.
Pure memory foam is where most people go wrong. The contouring feels good at first because the foam cradles the hip, but dense closed-cell foam compresses further under sustained load. By 3am you've sunk past the sweet spot and the spine is starting to rotate. Heavier sleepers hit this point faster. I've had one reader describe it as "fine for the first three hours then agony by morning" and that captures the pattern better than any spec sheet.
Brands I'd recommend for sciatica
Otty's Original Hybrid sits at medium-firm and the pocket spring base holds the pelvis where it needs to be for back sleepers. The 2,000 springs on a king size give proper independent response across the mattress, so your hip stays supported even if your partner is moving on the other side. For sciatica sufferers who sleep on their back, this is the first mattress I'd suggest trying.
If Otty feels too firm at the hip - and for lighter side sleepers it can - Simba Hybrid Pro is the softer alternative that keeps the spring base underneath. The Simbatex comfort foam is more responsive than standard memory foam, so you get pressure relief without the slow sink that aggravates sciatic symptoms overnight. I've tracked both side by side and the Simba suits side sleepers under about 13 stone where the Otty suits back sleepers and anyone over 14 stone.
Origin Hybrid Pro pushes the spring count to 5,700 on a king, the highest in the mainstream D2C category. More springs means more precise contouring, and for sciatica where the problem area is localised to one hip and buttock, that precision matters. The 15 year warranty is the longest in the D2C field if long-term protection influences your decision.
Heavier sciatica sufferers over 16 stone should look at Otty's Pure+ 4000. 4,000 pocket springs and a firmer construction that stops the pelvis dropping under higher body weight. Most D2C brands are not built for heavier sleepers and the sciatica problem gets worse when the mattress can't hold your weight.
Worth considering if you don't want the D2C route: Hypnos builds all its mattresses around pocket springs and natural fibre fillings, and the firmer models in the Orthos Support range handle sciatica well for back sleepers who prefer traditional construction. I've found the natural wool and cotton recovers shape better over time than foam alternatives, which matters for a condition where consistent support night after night is what counts. You pay more. Quite a bit more. But the build quality justifies it if the budget allows.
For anyone who's tried memory foam and found it makes the sciatica worse, Dunlopillo is the latex alternative. Natural latex springs back quickly when you shift position, doesn't hold heat, and doesn't create the slow compression that dense foam does. The Millennium model is where most buyers start.
Sleep position matters as much as the mattress
Side sleeping is the position most spine specialists recommend for sciatica. It takes pressure off the lumbar spine and opens up the space where the nerve exits the vertebrae. The catch is that side sleeping creates pressure at the shoulder and hip, which is why the mattress comfort layer matters so much for side sleepers with sciatica. Too firm at the surface and you get a new problem at the hip. Too soft and the pelvis drops.
Back sleeping works for some sciatica sufferers, particularly if the mattress holds the lumbar curve without letting the hips drop. Put a pillow under your knees. It sounds basic but it reduces tension through the lower back and piriformis. I'd call it the single cheapest thing you can do for sciatic pain at night.
Stomach sleeping is the one to avoid. The pelvis drops forward, the lower back arches, and the nerve gets compressed at the exit points. If you're a lifelong stomach sleeper with sciatica, switching positions is the harder but more effective fix than any mattress change.
Common mistakes
Buying too firm because someone told you firm is better for back pain. That advice applies to some types of lower back pain and not to sciatica, where the nerve runs close to the skin at the hip. A firm mattress pushes straight into the problem area on side sleepers.
Buying a mattress topper instead of replacing the mattress. A topper adds surface cushioning but can't fix a base that's sagging or a spring unit that's lost tension. If the underlying support is gone, the topper just moves the problem up a layer.
Ignoring the pillow. Your pillow controls neck alignment and if the neck is out of line the whole spine shifts. Side sleepers with sciatica need a higher, firmer pillow than back sleepers. Get both right or neither works properly.
Waiting too long to see a professional. A mattress can manage discomfort but it can't fix a herniated disc, spinal stenosis, or piriformis syndrome. If your symptoms include numbness, weakness in the leg, or any changes to bladder or bowel function, stop reading this and see your GP.
Verdict
A medium-firm hybrid with pocket springs is where most sciatica sufferers should start. Otty Original for back sleepers, Simba Hybrid Pro for side sleepers, Origin Hybrid Pro if you want the highest spring count available, and Dunlopillo if you want the latex route. Side sleeping with a pillow between the knees is the position most spine specialists recommend. And if the pain is not improving, the mattress is not the answer - your GP is.
