1200 Thread Count Cotton Rich Cooling Sheet Set crafted with a premium sateen weave offer a silky-smooth feel and elegant sheen. Includes: one fitted sheet 78 by 80 inches with 15 inch pocket to fit up to a 18 inch deep mattress, one flat sheet 108 by 102 inches, and four pillowcases 20 by 40 inches. Luxurious 1200 thread count sateen woven fabric made fomr 55% cotton and 45 % polyester fibers with an added cooling treatment to wick away moisture.