Pellon Shape Flex Woven Cotton Interfacing is made of 100% cotton and measures 20" wide. This is all-purpose interfacing that provides support to your fabrics. Use this interfacing on things like collars, cuffs, and pockets. Pellon Shape Flex Woven Cotton Interfacing can be used with light to medium weight fabrics like knits, oxford cloth, chambray, gingham, poly/cotton blends, and more. It is recommended that you pre-shrink this interfacing. To shrink this interfacing before use, soak in warm water for approximately 10 minutes, when finished gently squeeze out the excess water and air dry (do not put in the washer or dry to pre-shrink, the material may lose its adhesive). This item is sold by the yard.