Beautyrest Black Katarina Luxury Firm Pillow Top Mattress, California King Advanced Pocketed Coil Technology provide Enhanced conformability and pressure relief Surface Cool Plus Fiber Located at the surface of the bed this layer of vertically oriented fibers is designed to dissipate body heat away from the sleeping surface Micro Diamond Memory Foam This foam utilizes the conductive properties of diamond particles which are designed to move heat away from the body Air-cool Beauty Edge Enhances airflow through the mattress and offers support and stability right to the edge 10 year Limited Warranty Guaranteed long-lasting durability