The iComfort 1000 Hybrid Medium mattress is comfortably cool and supportive. Layers of Carbon Fiber Memory Foam and EverCool Fuze Gel Memory Foam help channel heat away from your body, while the 1025 iComfort Hybrid Support System with BestEdge Foam Encasement conforms and supports your every curve. Serta iComfort 1000 12-in Twin Extra Long Hybrid Memory Foam/Coil Blend Mattress in White | 500802178-1020