Balance: The Element is engineered to combine both softness and support. The top layer of memory foam comforms to your body to relieve pressure. Breathable open-cell foam layers allow airflow to soothe you to sleep. Support: The durable base foam is engineered to prevent sinking and sagging while supporting your whole body. Certified by our Sleep Lab 100 night trial and free returns within 100 days of receipt of shipment on products sold by Casper