12" Comfort Series Soft Gel Memory Foam Tight Top MattressComfort Layers: The mattress features a 3 inch top layer of soft I gel infused foam and a 3 inch layer of convoluted gel memory foam for enhanced comfort. Support Foam: Includes a 5 inch high density support foam to provide firm support and maintain mattress structure. Removable Cover: Comes with a zip off, removable, anti microbial luxury cover that adds convenience and hygiene. Open Cell Memory Foam: Utilizes open cell soft memory foam for improved