Create-A-Pattern Tracing Interfacing - Bosal #405. This handy product does not tear, it does not shrink when ironed, and you can stitch it up like muslin for your mock-ups. If you have a dressform, you can use this for your draping projects and draw in the design lines directly to the interfacing. You can preserve your original pattern pieces by tracing them onto this interfacing, and if your size changes, you can go back to the intact original and trace your new size. Bosal #405 - Create-A-Pattern Tracing Interfacing - 10 yard roll. 45" wide. Priced per roll.