The Silentnight Cloud 2000 Pocket Memory Foam Mattress features the advanced Mirapocket spring system with targeted zoned support. With twin layers of 2000 pocket springs, this mattress offers optimum zoned support for perfect spinal alignment. The pocket springs react independently to changes in weight meaning a more comfortable & peaceful night’s sleep. This medium/firm mattress also features a deep layer of body moulding memory foam for ultimate pressure relief & support. The memory foam layer moulds to the contours of your body shape during the night to help alleviate aches & pains creating a more restful & deeper night’s sleep. The mattress comes complete with an Allergy UK approved Purotex cover which is 100% natural helping to keep dust-mites at bay & reduce allergens to create a drier, fresher & all round healthier mattress.