Beautyrest Black Sonya Luxury Firm Pillow Top Mattress, King Luxury firm Pillow top mattress only; 18" 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 and black ice memory foam helps maintain an ideal sleep climate Latex and memory foam layers conform and contour for pressure relieving comfort with a durable micro Coil layer to enhance individualized Back support The advanced pocketed Coil helps provide individualized Back support, ease of movement, and pressure point relief Smart motion and adjustable base friendly