Get your beauty sleep with this 3 topper featuring gel memory foam that absorbs pressure and channels heat away to prevent sleep disturbances by keeping you cool. draws uncomfortable warm air away from your body open nature of textured side provides improved airflow polyester knit fabric cover features an air-permeable backing that serves as a moisture barrier offers moisture control by preventing fluids from penetrating the surface of the mattress topper meets all flamability standards Polyester cover with polyurethane foam and polyester fill. . Machine wash, line dry cover; spot clean foam. Foam is made in America; cover is imported. Twin: 38x74x3 Full: 53x74x3 Queen: 59x79x3 King: 75x79x3 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 shape Topper dimensions may be sized slightly smaller than your mattress for a secure fit under your sheets.