40 Mediumweight Sew-In Crafting Stabilizer, Color: Black 20" x 20 Yards by the Bolt - 1 Pack. A mediumweight to heavyweight sew-in fabric stabilizer for firm, crisp support. It is great for hat brims, tote bags, straps, home décor, accessories, and needlecraft backings. Made of 100% Polyester. This package contains 20 yards of 20 inch wide sew in medium weight stabilizer. 40 Mediumweight Sew-In Stabilizer, Black, 20" x 20 Yards by the Bolt. 1 Pack. Acid-Free Sewing machine safe Sew-in application Color: Black Style: 40