Sleep Better Isotonic 2-Inch Serene Comfort Tech Mattress Topper 100% Polyester Cover Made in the USA and Imported Isotonic, Serene, ComfortTech, and Active Air Technology are registered trademarks of Carpenter Co. Billions of microscopic air capsules enhance support properties Dissipates heat faster than memory foam Exceptional durability, Made in the USA 2.5 Pound density foam