Beautyrest Black Mariela Extra Firm Mattress, King Extra firm mattress only; 14" high; 10 year limited warranty; order two Foundations separately to complete Set Surface cool plus fiber is designed to dissipate body heat away from the sleeping surface helping you sleep comfortably Black ice memory foam helps maintain an ideal sleep climate while comfort response Latex conforms and contours for pressure relieving comfort The advanced pocketed Coil helps provide individualized Back support, ease of movement, and pressure point relief Smart motion and adjustable base friendly