Achieve customized comfort with this pressure-relieving, 4-inch mattress topper made with two proprietary foam formulations and reversible comfort options. Two inches of plush responsive blue memory foam provides therapeutic cushioned comfort while two inches of high density supportive white foam provides firm support. This topper is ideal for rejeuvenating an old mattress or enhancing the comfort characteristics in multiple ways. Both foams are open cell and breathable and are 100% CertiPUR-US certified and naturally hypoallergenic. Ships compressed, rolled and shipped to conveniently arrive at your doorstep for easy setup. Proudly made in the USA.