Enjoy the comfort and convenience of the Sealy Mattress in a Box. This 12-inch mattress is designed with premium high density memory foam that conforms to your body and provides pressure relief paired with a responsive comfort foam that provides balanced support. 12-inch mattress delivers a higher level of pressure relief than 8-inch mattress. The high-grade conventional foam layer promotes airflow and support, pulling heat away from your body to keep you cool throughout the night. These 3 distinct layers create a harmonious sleep system for ultimate relaxation. The mattress is covered with a white circular knit cover that is removable for your convenience.