The “Deluxe” mattress comprises of a “higher density” 3" memory foam to offer you a firmer feel. The superior support coupled with the memory foam’s “temperature sensitive” properties (which can cause it to conform to the contours of your body) provides optimum pressure relief which greatly enhances sleep by reducing the pressure around the hips and shoulders whilst keeping the spinal column correctly aligned thus promoting the ideal sleep-posture to relieve neck and back problems. Memory Foam alleviates stress on the body and relieves pressure on your joints to give you the best nights sleep ever. Coolmax increases comfort and absorbs body moisture keeping you comfortable all night long.