Lycvki 12-in Medium King Hybrid Memory Foam/Coil Blend Mattress in a Box

12-in Medium King Hybrid Memory Foam/Coil Blend Mattress in a Box. Cooling-gel mattress - our diamond mattress features gel-infused memory foam that draws heat away, promoting a cool, breathable sleep surface.. Enjoy personalized comfort and uninterrupted sleep.. Pressure relief and support - the gel memory foam mattress offers targeted support for side sleepers, cradle-like comfort for back sleepers, and gentle alignment for stomach sleepers.