Sleep Master iCoil 6 Inch Spring and MyGel Memory Foam Hybrid Mattress, Twin Fiber quilted cover, Pressure Relieving Comfort Foam, and Gel-infused Memory Foam layers provide cool comfort Base layer of 5 Inch iCoil Pocketed Springs ensures no motion transfer from a sleeping partner, while maintaining customized spinal alignment Only the Highest Quality of Foam-Foam is CertiPUR - US Certified for durability, performance, and content Smartly Shipped - Our patented technology allows our mattresses to be efficiently compressed, rolled and shipped in a box conveniently to your door Worry free 10 year limited warranty