Grande Hotel Collection Trizone Memory Foam 11-inch Queen-Size Posture Support Mattress 3-inch layer of premium 3-pound density memory foam is designed to disperse body weight evenly, improve circulation, and reduce pressure points that can disrupt sleep 3-inch zoned comfort support layer provides proper support for the head, torso, and legs 5-inch base layer is engineered as a foundation providing balanced support for optimum performance