Pellon 40 Sew-In Crafting and Sewing Fabric Stabilizer White. 20 x 10 Yards by the Bolt - 1 Pack. It is a midweight to heavyweight stabilizer for firm crisp support. It s ideal for hat brims tote bags craft and home décor and needlecraft backings. This midweight sew-in stabilizer is made from an acid-free 100 percent polyester and it s machine washable. It can be used in a sewing or embroidery machine.