Description The Resistance Band Exercise Loops are made for rehab & training exercises. When to use them With these high quality elastic loops, muscle groups & tendons can be stretched & strengthened as part of rehabilitation training or sports training. With this pack of three different weights, it means you can gradually ease back into exercise or take on progressive training. Common Conditions For treatment & prevention of Hamstring & Thigh muscle injuries. Resistance Light (yellow) Medium (red) Heavy (green) Extra Strong (Blue) How they work The Resistance Band Exercise Loops can be used to add variety to standard workouts. Its an excellent method of resistance training for the development of specific muscles & tendons. Three different weights offers a gradual challenge & aid to build muscle strength. Start with the lowest level of resistance & build sets & repetitions gradually. Then once the exercises become too easy, move on to the next level of resistance provided by the next exercise loop. Lightweight & portable, Resistance Band Exercise Loops can be taken anywhere & offer an alternative to heavy & large weights.