2 rolls elastic bands are included in this package; color: white and black, one roll for each color. Length between two holes: 1.2cm/0.47 inch; Length for one roll: 5m/ 5.5 yard; width: 1.9cm/ 0.75 inch Length of hole: 0.7cm It accommodates up to a 5/8" button. Materials: polyester, elastic and durable Perfect design with buttonholes, wonderful tools for adjusting pants or shorts if they are too large in the waist..