Sleep Inc Sleep Cool 14" Medium Hybrid Queen Mattress pairs cooling performance with responsive support to create a balanced sleep surface for a wide range of sleepers. Layered memory foam and polyurethane deliver pressure-relieving contour and a medium feel, while a responsive innerspring core adds lift and improved airflow. A cooling cover helps move heat away from the body, the mattress is made in the USA and sized for queen bed frames, and it works with most box spring bases to provide stable support night after night.