CanDo® resistive band exerciser roll is packaged in a dispenser box. Simply unroll desired length of exercise band from dispenser box and cut with scissors. CanDo® high quality synthetic latex free exercise band has been used for physical therapy and athletic training by clinics, fitness centers and individuals since 1987. It has become a well known staple of many physical therapy programs. The latex free formula has been specially created to mimic the stretch characteristics of latex band. CanDo® exercise band is an economic solution for upper and lower body exercise. Lightweight, compact and portable. Durable. Effective when used alone, or with handles and anchors. Color-coded according to the exercise band?s resistance. CanDo® is licensed to use the Thera-Band® color sequence so resistance level is easily identified. Available in 8 levels of resistance for progressive exercise. 50-yard rolls have a core that fits most dispenser racks. Levels range in order of strength from least to greatest resistance: tan, yellow, red, green, blue, black, silver, gold. Uniform width - each band is 5" wide. 50 yard roll - Black - X-heavy.