Specification: Material: polyester, latex Roll length: 30 meters (32.8 yards) Width: 2cm(3/4 inch) Color:Black Packing quantity: 1 roll Buttonhole Elastic, 20PCS 18mm Resin Button Feature Made of polyester and latex, strong, light weight, good elasticity, good abrasion resistance, high shrinkage, will not irritate the skin, will not warp, easy to sew, washable and machine-dried. Good elastic band and buckle with buckle hole, convenient and helpful to adjust the length, suitable for making wristbands, shorts, skirts, maternity clothes or children's clothes, especially maternity clothes. Button-sewn stretch belt, stretched to 90 Percent of the original length, durable elasticity. Frequent stretching, washing or drying will not lose elasticity. Easy to cut and use, can be sewn by hand or machine. Compatible with different materials, such as cotton, polyester and leather.