Pellon SF568 Lightweight Shape-Flex is a lightweight woven, fusible interfacing. It provides lightweight, yet crisp support for collars, cuffs, yokes, pockets, facings, and other detail areas of a garment. It can also add body and permanent stability when used as a backing for needlework and punch embroidery. Lightweight Shape-Flex is intended for light woven and knit fabrics. To pre-shrink, fill a sink with warm water. Place interfacing in water for about ten minutes. Do not put in washer or dryer by itself or you may loosen the adhesive. Gentle squeeze out excess water and allow to dry.