Darller Heavy Duty Stretch Resistance Bands - Mobility and Powerlifting Exercise Bands - Pull-Up Assist Bands for Body Stretching, Powerlifting, Resistance Training PRODUCT INFORMATION --- Red: 10-35 lbs, Black: 20-60 lbs, Purple: 35-85 lbs, Green: 50-125 lbs, Blue: 65-175 lbs. Many people buy more than one band and combine the mobility bands for most efficient training.It is fit for functional training, yoga, and physical therapy to help strengthen torn ligaments or muscles. DURABLE MATERIAL --- The assist bands are durable and built to last, they can be stretched repeatedly year after year and are made from natural latex material which is kind to the environment. GREAT VALUE --- Workout your arms, back, shoulders, legs, and butt all at once with resistance loop bands. With stretching bands training, every part of the exercise has resistance, resulting in better range of motion strength and more complete stimulation hence promoting muscle growth. SUITABLE FOR ANY FITNESS LEVEL --- Each assistance bands offers a different level of resistance, both for pull up training, and for adding resistances to bench press, squats and Olympic lifts. Whether you are just starting out with pull ups or you are an athlete working on regaining or enhancing your strength, the resistance band will help you take your pull up and chin up training to the next level. RISK FREE --- Quality guarantee and 5-star customer service. If you are not completely satisfied with your pull-up band simply let us know and we will do our best to solve your problem