Firm 12″ King Gel Infused Memory Foam Hybrid MattressWake up refreshed with this firm 12 hybrid mattress. Featuring a network of highly engineered platinum pocket springs, these individually wrapped coils decrease motion through the night, therefore minimizing the chances of sleep disruption. A top layer of gel infused cooling memory foam dissipates heat for a cooler nights rest. Finally, constructed of materials certified for low VOCs, this is a better mattress for you and the environment.