CanDo high quality latex resistive exercise tubing has been used in clinics for rehabilitation conditioning and training since 1987. It has become a staple of many physical therapy and athletic training programs. CanDo exercise tubing is an economic solution for upper and lower body exercise. It is lightweight portable and durable. Effective when used alone or with handles and anchors. 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. Levels range in order of strength from least to greatest resistance: tan yellow red green blue black silver gold. CanDo low powder exercise tubing is made of natural rubber latex which may cause allergic reactions. For those with latex sensitivities there are latex-free alternative offerings of CanDo exercise tubing. 25 roll - Blue - heavy