CanDo high quality resistance exercise bands have been used in clinics for rehabilitation, conditioning and training since 1987. It has become a well known staple of many physical therapy programs. The CanDo exercise band is an economic solution for upper and lower body exercise.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 is licensed to use the Thera-Band color sequence so resistance level is easily identified. Available in 8 levels of resistance for progressive exercise. 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.