Beyond Down Gel Fiber Mattress Pad, Twin 100% Cotton/Spandex Made in the USA and Imported 300 thread count, 100% cotton top cover with 233 thread count back cover Baffle-Box construction prevents fiber migration Filled with luxurious micro denier polyester gel fiber Spandex skirt that fits mattress up to 20 inches deep Twin measures 39 x 75 inches Hypoallergenic and machine washable Made in the USA and Imported SleepBetter and Beyond Down are registered Trademarks of Carpenter Co.