Byourbed Luxury Down-Top Goose King Featherbed Size: King Bedding Mattress Topper 82" x 84" Material: 100% Cotton; 24 oz. Fill Power Down, 240 oz. Fill Power Feather Construction: Top fabric 230 Thread Count Cambric Cotton combined with bottom fabric 195 thread count Twil Cotton for extra durability Important: Top Layer of down provides softness while Bottom layer of the feathers provides support Comfort Proof Tested Results