Serenia Sleep 3-Inch Two Layer Topper Gel Memory Foam Made in the USA, King Adds comfort by combining high density and premium gel memory foams to revitalize your mattress Sleeps cooler and drier with premium heat dissipating, breathable open cell gel memory foam Relieves pressure points that can contribute to tossing and turning Encourages better sleep posture as it supports and conforms to your body profile Foam is manufactured following CertiPUR-US guidelines