The crown mattress features 7.5 inch higher resiliency base foam, 2 inches of plush pillow top and 2.5 inch of traditional pressure relieving memory foam which gives royal treatment to your hips and shoulder. Its 9 pressure points are designed to maximize support and airflow. All our mattresses are built with CertiPur US certified foams and comes with a 10-year prorated limited warranty against manufactured defects.