Mtx Millennium, 250, King FT, 15″ MARTEX MILLENNIUM 250 Blend Sheet, 60% Cotton/40% Polyester in Fresh White, our cleanest fresh looking white. King Fitted with 15″ Pocket. Fits mattress to 17″ deep. Gold colored hem thread indicates size. The cotton rich blended fabric is a durable plain weave construction. Product is GSA compliant and Oeko-Tek certified.”