The CanDo? Low-Powder exercise tubing PEP? pack can be used for a progressive resistance exercise program. Each PEP? pack comes with three different 6-foot tubing and an illustrated instruction/exercise chart. Easy Level comes with yellow, red and green exercisers. Each exerciser is packaged in a polybag. Simply remove exercise band from polybag and it is ready to use. 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 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. CanDo? is licensed to use the Thera-Band? color sequence so resistance level is easily identified. 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.