The Spring Memory 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 traditional coil 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• 5cm of Memory Foam• Traditional coil spring system• Reflex foam boundary around springs• 21cm Thickness• Orthopedic mattress• Ecological• Sanitised fabric• Hypoallergenic• Anti dustmite features• Made to British Standards/Regulations• Vacuum packed and rolled• Fantastic-value, only at Elegant Furniture UK DIMENSIONS:• Mattress Size : Double Mattress