Austin Horn Classics 600 Thread Count Dobby Supima Cotton 4-Piece Sheet Set, King, Grey 100% Supima Cotton Imported The 4-piece dobby Supima cotton sheet set; With 600 thread count construction, these luxurious sheets are as soft as they are durable Set includes; one flat sheet, one fitted sheet and two pillowcases Materials; 100-percent Supima cotton; Thread count; 600;care instructions; machine washable