Complete progressive resistance exercise program with tension progressive resistance bands. Multipurpose strength training, stretching, muscle retraining, coordination training, endurance training and core exercises. Easy to use and portable enough to take anywhere. Provides both concentric and eccentric force to the muscles, improving strength, range of motion and coordination. Can be used to train one or more muscle groups. Color-coded, progressive resistance from yellow to silver. Helps muscle performance. Different band thickness to increase resistance level.