My most popular sheet, smooth and silky sateen 100% cotton with 400 thread count Top and bottom labels for easy placement Patented fit technology to stay in place and fits mattresses up to 18&34 Fitted sheet includes full perimeter elastic to stay secure to your mattress Wrinkle, pill and shrink resistant plus bleach friendly for easy care Oeko-Tex certified for no harmful substances. LTKHome LTKSaleAlert