Sleep Better Isotonic Therapure 2-Inch Mattress Topper, King Double Knit Made in the USA and Imported SleepBetter, Isotonic, and Therapure are registered trademarks of Carpenter Co. Soft double knit fabric cover Measures 76x80x2 Stretch to fit skirt fits mattresses up to 18 inches 5 year warranty SleepBetter, Isotonic, and TheraPure are registered in the U.S. Patent and Trademark Office