RefreshRest cooling and antimicrobial technology are woven into the soft cover. Moisture-wicking, breathable fabric dispels heat and fights bacteria for a fresh and comfortable sleep. 1" of therapeutic gel memory foam is the first part of the NectarTech Gel System. It provides perfect pressure relief and a responsive contouring feel for soft comfort. 3" of gel foam is the second part of the NectarTech Gel System gives responsive back support and promotes proper spinal alignment. 8" of conventional foam ensures stabilized support and maximum motion isolation for undisturbed sleep. A soft stitch bond cover keeps the inner core of your mattress in place and prevents each of the layers from shifting on top of each other.