Egyptian cotton is famous for its soft, luxurious hand and elegant luster. Our 400 thread count sateen sheets are made with 100% Egyptian cotton.sateen weave single ply 400 thread countmade with 60s yarns (yarn size)mercerized 100% Egyptian cotton fits up to a 17 inch deep pocket machine washable made by Echelon HomeEach sheet set comes with pillowcases, a flat sheet and a fitted sheet. Twin sets come with one standard pillowcase. Full and queen sets come with two standard pillowcases. King and Cal King sets come with two king pillowcases.