Exercise tubing is color-coded according to resistance. Simply unroll desired length of exercise tubing and cut with scissors. CanDo® is licensed to use the Thera-Band® color sequence so resistance level is easily identified. Tubing is available in 8 resistance levels. Latex free. These CanDo Rolls of Exercise Tubing offer clinics tremendous value for patient rehabilitation, fitness, physical therapy and athletic training. Additionally, they are great for stretching, muscle toning, improving balance and conditioning all major muscle groups.