PELLON-Sew-In Medium/Heavy Weight Interfacing. This bolt of medium/heavy weight interfacing contains 30yds/27.5m and is constructed of 60% polyester/40% rayon is non-woven and was created for sewing into medium weight fabrics. This interfacing is perfect for garments home decor and crafting projects. Care: machine wash tumble dry low dry clean. Interfacing measures 20in x 30yds. Made in USA.