Made in Austria, this is the mattress topper that prevents overheating and chills using a fabric originally developed for NASA to help astronauts adapt to extreme temperatures. The topper contains millions of invisible microcapsules that absorb excess heat from your skin when you are hot and release that stored warmth when you are cold, ensuring a comfortable temperature throughout the night. The topper requires no electricity or wires, and adjusts independently to each individual’s climate, so two sleepers will remain comfortable all night. Made with a 70% maize/30% Outlast viscose fill and a soft 100% cotton exterior. Elastic straps on the corners secure the topper to a king-size mattress. Machine washable and dryable. Imported. White.