Luxuriously soft 100% Pima cotton zippable cover with a 750 thread count Cover is filled with synthetic down for lofty soft comfort Inner pillow is filled with memory fiber Gives your head and neck the proper support you need when you sleep on your back or stomach Cover is filled with 100% down alternative fill Standard/Queen Pillow measures 16" W x 24" L King pillow measures 16" W x 32" L Machine washable