Pellon Fashion Fuse Fabric Interfacing. Off-White. 18 x 10 Yards by the Bolt. 1 Pack. Pellon 420F Fashion Fuse adds definition and structure to leather furs imitation leather and imitation furs. Fashion Fuse will support and enhance the shape of a project without affecting the hand of the material which will remain fully pliable after application. It also helps avoid any shifting of material when sewing. No pre-shrinking is required on this interfacing. Fiber Content: Acid-Free 70% Rayon/30% Polyester.