Memory foam mattress: Get a seven-layer Diamond memory foam mattress. Visco-elastic: Plus a two-inch layer of NASA-inspired next generation memory foam which shapes to your body. Pocket sprung: With 1000 individually-nested pocket spring to provide support for your entire body. Reflex foam: As well as layers of reflex foam and memory foam to complete a thick and comfortable mattress. Hypoallergenic: Features a soft, micro-quilted cover which is anti-allergy and anti-dustmite. 7-Layer Memory Foam Mattress | Small | Living Social