Made with IsoFresh, an odor-neutralizing system, this memory foam mattress topper is designed to relieve pressure points in seven different zones and features a cool channel ventilation system that responds to body heat, instantly conforming to your shape and position for the ultimate in a refreshing night's sleep. 1½" memory foam 7-zone design to relieve pressure points and help reduce tossing and turning Urethane foam. Spot clean. Made in America. Twin: 34x72x1½"H Twin XL: 34x76x1½"H Full: 50x72x1½"H Queen: 56x76x1½"H King: 74x76x1½"H Cal. King: 68x78x1½"H Please note: To ensure proper sizing without overhang, this mattress topper is made slightly smaller than standard mattress dimensions as shown in the above measurements.