This silentnight mirapocket premiere 2800 pocket luxury pillowtop memory double mattress features a 2800 advanced zoned mirapocket spring system with layers of luxury fillings including additional sumptuous pillowtop layer containing body moulding memory foam modern microquilted soft knit lid treated with allergy uk approved purotex probiotics to keep the mattress naturally dust mite free easy care mattress no need to turn mattress depth 34cm medium firm