Pocket Sprung mattresses are some of the top-of-the-line in terms of support. Each mattress is made up of a base layer and a comfort layer and depending on cost generally depends on the type of base layer you receive. In this instance, pocket spring is generally regarded as one of the better, if not the bed, support layers. Each spring is housed in it's own little pocket within the mattress, ensuring it can't escape or move around and is able to work independently to others in the mattress giving you contoured full body support that will last for years to come.