You can do training with the resistance bands to lose weight and build muscle. You can do stretching exercise for warm-up with the resistance bands. It can effectively improve your muscle,physical activity and flexibility. Suitable for athletes,office staff,sport fans and outdoor exercises,gym and home. Red : Total Circumference: 2080mm, 13mm (15-35lbs) Black : Total Circumference: 2080mm, 22mm (25-65lbs) Purple :…