Sleep Comfort 2-Inch Gel Memory Foam High Loft Topper with Waterproof Cover, Full 100% Polyester Made in US Breathemesh technology Silverclear treatment 300 thread count cotton cover Machine washable Hypoallergenic Draws uncomfortable warm air away from your body Open nature of textured side provides improved air flow Polyester knit fabric cover features an air-permeable backing that serves as a moisture barrier Reduces tossing and turning for a deep, healthy night's sleep Memory foam is resistant to dust mites and is naturally antimicrobial