... spring, Zoned mattress spring, Inner spring, Pocket coil, Pocket Cushion Spring, Sofa Spring, Seat Spring, furniture spring,, Zigzag spring, ... of the art mattress uses temperature responsive, slow recovery memory foam which contours to the natural shape and weight of ... that cause sleep discomfort6 3" 3.125pound(50kg/m3) Memory Foam comfort layer7 Sensitive to body weight & temperature8 Provides full ...