"Super-soft and long lasting, Microfiber add a bright touch to your bedding. Fitted sheets made with elastic all around and Fits up to a 18"" mattress. Set includes one fitted sheet, one flat sheet, and a pair of pillowcases (one with twin). Machine washable 100% brushed polyester microfiber. These sheets feel as soft as 600 Thread count cotton sheets, and hold better in washing. 5PC Split King Sheet set Includes: *1 King Flat Sheet 110x102" *2 Twin Fitted Sheets 39x80" Each. *2 King Pillow cases 20x40" Each.