This UNIQUE braided elastic roll is narrow braided elastic for sewing waistbands, sleeves, and necklines when used inside a casing. It includes one white roll measuring 3 mm wide by 320 m long, making it suited to bulk sewing, repairs, classrooms, or production environments. Braided elastic can narrow as it stretches, so keep it in a casing and avoid stitching through when you want consistent stretch.