The Pocket Memory 4000 Mattress is made from unique upper layer of high density visco-elastic polymer gel. Originally designed for NASA missions, it is soft and pliable following the outline of your body perfectly. A pocket spring system is included for extra comfort with bouncy support and a reflex foam boundary is used to prevent you from rolling off the mattress. FEATURES : Material : Memory Foam Finish : White 10cm of Memory Foam 24cm Thickness Individually wrapped pocket spring system Reflex foam boundary around springs Orthopedic mattress Ecological Sanitized fabric Hypoallergenic Anti dust mite features Made to British Standards/Regulations Vacuum packed and rolled Available at an affordable price Images shown are for illustration purpose only DIMENSIONS : Mattress Size : Single Mattress