Silentnight mirapocket premiere 2000 pocket memory king size mattress designed with 2000 independent pocket springs and a sumptuous layer of body moulding memory foam with modern microquilted lid and side stitched border with handles and air vents soft knit lid fabric treated with allergy uk approved purotex probiotics to keep the mattress naturally dust mite free easy care mattress no need to turn mattress depth 29cm