Simmons Beautyrest Black Giada Extra Firm King Mattress Only Comfort Features: ClimateRight Surface is a Phase Change treated mattress surface that provides an ideal sleeping teperature and adds a high level of comfort to the very surface SurfaceCool Plus Fiber is a layer of vertically oriented TENCEL fibers designed to dissipate body heat helping to keep you cool and comfortable GelTouch foam provides soothing comfort with exceptional surface conformability MicroDiamond Memory Foam has Micro-Diamond technology that helps move heat away from the body, assisting in cook, comfortable sleep Support features: Beautyrest Advanced Pocketed Coil system tht alternates rows of triple-strand coils with the orginal Beautyrest Pocketed Coil to provide the ultimate comforming back support, pressure relief and motion spearation.