4" Gel Memory Foam with 3M Cover 4" Memory Foam Mattress TopperThe Sleep Philosophy 4" Memory Foam Topper will transform your mattress from ordinary to extraordinary. Our topper features 2 inches of 2. 5 lb. density temperature control memory foam layered onto another 2" of high density support foam. The memory foam adjusts to your body temperature to help alleviate pressure points and relax muscles for a more soothing nights sleep. Experience amazing value and softness at a fraction of the cost. Memory foam is