The Deep Ortho (coolmax) mattress is made from High Density Memory Foam which gives you that firmer feel. Scientifically designed Comfort Cells actually reduce "Pressure Points" while you sleep. The pressure relieving properties ensure that the spinal column is correctly aligned removing neck and back pain, giving you the perfect sleep. Enjoy powerful support and unparalleled comfort for your back, hips, spine and entire body! Experience "supreme comfort," and wake up fully refreshed!