Get the best of both worlds with Serta Canada's Tate Smith Firm Tight Top mattress from the Perfect Sleeper Hybrid Collection. The Individually Wrapped Coil System features a Lumbar Support Core for optimal support and comfort. Additionally, the Best Edge Foam Encasement ensures that the support system covers the entire mattress for extra longevity. A layer of CoolAction Gel Memory Foam and Serta Foam provide additional comfort while the CoolTwist Gel Infused Memory Foam gives you personalized comfort right at the surface. This mattress is ideal for stomach and back sleepers.