Discover personalized comfort with the Isotonic Viscoelastic Memory Foam Mattress Topper. Featuring viscoelastic memory foam, this topper is designed to reduce tossing and turning throughout the night. Its customized fit distributes weight more evenly to help reduce pressure. The foam is CertiPUR-US certified and features IsoFresh odor-neutralizing technology. Specially sized to accommodate all standard-sized mattresses. Isotonic is a registered trademark of Carpenter Co.; IsoFresh is a trademark of Carpenter Co.; CertiPUR-US is a registered certification mark of Alliance for Flexible Polyurethane Foam, Inc.