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.