Pellon SF101 Fabric Interfacing White 15 x 2 Yards Precut Package - 1 Pack. It is an all-purpose woven fusible interfacing that provides crisp support for several locations on a garment. Use SF101 for collars cuffs yokes pockets facings and other detail areas. It makes these areas more stable and works nicely for making T-shirt quilts. It is intended for light- and medium-density fabrics and is machine washable for easy care. Fiber Content: Acid-Free 100% Cotton.