Length represents length of tubing from end to end when unit is laid flat and is taut. Lightweight, compact and portable, the tubing helps perform strengthening and conditioning workouts on-the-go, even in your hotel room! Two durable foam covered rigid handles give the exerciser comfort and a firm grasp. Made with high quality latex Cando® exercise tubing. Cando® high quality latex resistive exercise tubing has been used in clinics for rehabilitation, conditioning and training since 1987. It has become a well known staple of many physical therapy and athletic training programs. Cando® exercise tubing is an economic solution for upper and lower body exercise. Lightweight, compact and portable. Durable. Color-coded according to the exercise tubing’s resistance. Cando® is licensed to use the Thera-Band® color sequence so resistance level is easily identified. The tubing with handles exerciser is available in 7 levels of resistance for progressive exercise and 3 lengths to accommodate different needs. Levels range in order of strength from least to greatest resistance: tan, yellow, red, green, blue, black, silver. Cando® low powder exercise tubing is made of natural rubber latex, which may cause allergic reactions.