Pellon SF785 Woven Sew-In is an all purpose, woven sew-in interfacing for light to midweight fabrics. It adds body and crispness to a variety of projects including shirts, jackets, and ties or can even function as a stand alone fabric. It is great for use with fabric such as oxford cloth, chambray, poplin, and calico. White 55% Cotton/45% Polyester 20in width. Sewing machine safe. Machine wash warm. Tumble dry medium, or dry clean. Iron at wool/steam setting.