Allassea Gold Perfect Nite 12-Inch Hybrid Memory Foam and Spring Mattress, Twin XL (Also Available in Full, Queen, and King) 12-inch memory foam mattress with cooling Swirl Gel Memory Foam, which adds longer lasting comfort and limits body heat transfer The mattress High Density Support Memory Foam and Spring Pocket Coils give each individual ultimate support and sleep comfort Helps reduce pressure on the body, while conforming to each specific body shape, and creates a deeper level of sleep and relaxation Exclusive design construction allows each mattress to be used with all standard foundations or adjustable bases Each mattress is compressed and rolled for ease of transport and placement; all mattresses are wrapped in plastic and placed in a heavy-duty carton for protection during transport