Wigan interfacing is a bias cut, sew-in interfacing used in the process of stabilizing the armscyes, hems, and necklines of jackets, coats, and dresses. Its most popular use is in the hem for stability and a soft roll. Sandra Betzina highly recommends this product in tailoring couture style jackets. Available in white and black, in 5cm (or 2″) and 7.5cm (or 3″) widths.