This revolutionary memory foam mattress topper is infused with cool, rejuvenating gel to provide the ultimate supportive and comfortable sleep experience. gel absorbs pressure and channels heat awayprevents excessive heat build-up eliminates motion transfer and uncomfortable pressure points disperses weight evenly helps rejuvenate tired muscles and eases back pain Foam. Spot clean. Made in America. Twin: 74x38x3”Full: 74x53x3”Queen: 79x59x3”King: 79x75x3”Cal. King: 71x83x3”Memory Foam Tips: remove from packaging within 72 hours after unwrapping, air product for a few hours to eliminate trapped odors allow 48 hours for this product to return to its original shapeTopper dimensions may be sized slightly smaller than your mattress for a secure fit under your sheets.