Hotel Comfort 4-Inch Comfort Loft Memory Foam Topper with Poly Silk Cover, King 100% Polyester Made in US Originally designed for NASA this space age foam cradles your body, reducing pressure points that cause tossing and turning Textured foam design provides additional air flow for maximum comfort Memory foam is resistant to dust mites and is naturally antimicrobial Reduces tossing and turning for a deep, healthy night's sleep Gently cradles your body to provide a restful night's sleep