This White Warp Knitting Interlining is one thing every designer needs! Fusible interfacing melts and fuses when placed on a fabric and ironed, stiffening the fabric as to reduce its draping qualities. This material is fusible only on one side and lays at 59" in width, which is perfect for jacket and shirt lapels, cuffs, and collars. Note: Make sure never to put an iron directly on the adhesive side of a fusible fabric.