Pellon 950F ShirTailor is a firm fusible non-woven interfacing that is ideal for stabilizing shirt collars and cuffs. It gives a crisp smooth neat professional look. ShirTailor is best used with light to midweight woven and knit shirtings including oxford cloth chambray gingham madras tattersail pincord flannel polyester/cotton blends and kettlecloth. It has both a lengthwise grain for stability and a crosswise stretch for shaping. White 100% Polyester 20'' width Firm fusible non-woven interfacing Ideal for stabilizing shirt collars and cuffs Sewing machine safe Machine wash warm. Tumble dry low or dry clean.