Night Therapy MyGel 13 Inch Memory Foam Mattress, King Sleep cool layering system - 2.5 inch MyGel Memory Foam, 1.5 inch Memory Foam, 3 inch Pressure Relief Foam, and a 6 inch High Density Foam Support layer Foam is CertiPUR-US Certified for durability, performance, and content 10 year limited warranty Smartly shipped using patented technology that allows the mattress to be efficiently compressed, rolled and shipped in a box conveniently to your door