Our 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" 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 Oeko-Tex Standard 100 Certification Number: 11-31820 Description Give your bed a new look and feel with a Performance Sheet Set from Threshold. They are our most popular sheets for good reason soft, durable and easy to care for. The fresh selection of prints means there's just the right set to complement your bedding collection. We’re committed to making products better for you, and the world. This product is Standard 100 by OEKO-TEX certified, meaning that everything from the dyes and fabrics to accessories like buttons and zippers are tested and verified as free from harmful levels of more than 300 substances.