Hotel Comfort 5.5-Inch Memory Foam and Fiber Topper, California 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 Fiberfill provides down-like comfort Memory foam is resistant to dust mites and is naturally antimicrobial Reduces tossing and turning for a deep, healthy night's sleep Disperses your weight evenly and eliminates motion transfer