Egyptian cotton is famous for its soft, luxurious hand and elegant luster. Our 600 thread count duvet cover sets are made with 100% Egyptian cotton. sateen weave single ply 600 thread count made with 80s and 100s yarns (yarn size)mercerized 100% Egyptian cotton button closure duvet covers shams have a flange around all four sides and back openingmachine washable made by Echelon HomeEach duvet cover set comes a duvet cover and shams. Twin sets come with one standard sham. Full/Queen sets come with two standard shams. King sets come with two king shams.