Use for stretching, muscle toning, improving balance and conditioning all major muscle groups. Packaged in a dispenser box, simply unroll the desired length of exercise band from the box and cut with scissors. Made with thermoplastic elastomer, these bands are effective when used alone or with handles and anchors. Lightweight, compact and portable, allowing any upper and lower body exercises to be performed anywhere. 5 inches x 50 yards. Black color distinguishes stretchy band as one with extra heavy resistance.