Lightweight, compact and portable, the tubing exerciser helps perform strengthening and conditioning workouts on-the-go, even in your hotel room! Two permanent foam covered rigid handles give the exerciser comfort and a firm grasp. CanDo is licensed to use the Thera-Band color sequence so resistance level is easily identified. The BowTie 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. Length represents length of tubing from end to end when unit is laid flat and is taut. CanDo low powder exercise tubing is made of natural rubber latex, which may cause allergic reactions.