Experience ultimate comfort with the Serta Sheep Retreat 10" Medium Memory Foam Mattress in a Box. This mattress features a unique blend of 3 Serta foam layers that deliver long-lasting cooling and supportive comfort. The gel memory foam contours to your body for cradling comfort while promoting airflow to keep you cool and comfortable all night. With a transitional foam support layer and Serta Foam Core, this mattress offers durable support for any sleep position, ensuring edge-to-edge comfort and support all night long. Features: Gel memory foam for cradling comfort Transitional foam support layer for all-over body support Serta Foam Core for durable support Long-lasting cooling properties Consistent edge-to-edge support