Pull up and Chin up assist bands -provides 100-175 lbs of resistance (Green)-for P90-X Fitness Workouts-Resistant Exercise, Crossfit, Powerlifting Stretching-Guaranteed- (single band) YouCanDoIt For clarity  6 Resistance Bands are sold individually  Made of Natural Latex Rubber - Assistance level is list below under description. Benefits You can do Pull Ups, Chin Ups, Stretching, Yoga, Pilates, Strength Training, Power Lifting and many more. Who can use? Lightweight woman or teen thru a heavy weight male. Why use it? Slow control and full range of motion providing less chance of injury and a more beneficial workout. YouCanDoIt. Our Guarantee  30 day full refund