TheraBand Professional Resistance Bands help users rehabilitate injuries, improve functional living, enhance athletic performance, and makes measuring progress and achieving goals for fitness or therapy easy. The resistance bands are easy-to-use, convenient, portable, and are an effective alternative to free weights and weight machines. They can be used in the clinic, at-home, or on-the-go. They are available in 8 color-coded levels of progressive resistance, giving at-a-glance documentation of progress from one level to the next and allows the user to progress as they get stronger.