Just like sleeping on a fluffy, puffy cloud! The Beyond Down mattress pad is filled with luxurious synthetic down that emulates the finest European white goose down. The 300-thread count, 100 percent cotton cover features baffle box construction to prevent shifting of the fill. The 14-inch Spandex skirt fits mattresses up to 20 inches deep. It is machine washable and hypoallergenic. SleepBetter and Beyond Down are registered Trademarks of Carpenter Co.