Best Price Mattress 4-inch 5-zone topper with green tea infusion is a premium memory foam mattress topper made with CertiPUR-US certified foam that instantly revamps your old mattress for maximum comfort and better sleep. Our topper features 5 body zones with different points of contact all throughout the body to prevent tossing and turning. Its breathable body-conforming memory foam is infused with green tea to help both you and your mattress stay refreshed with its naturally calming and odor control benefits. Responsive active suspension isolates motion to provide undisturbed sleep for you and your partner.