A variety of exercises can be performed - for physical therapy, rehabilitation, pull-ups, stretching, jumping and other light exercises,strength training, powerlifting and etc.They are also perfect for those who only need a slight push for their pull ups. Each assisted band has a different strength so that you can increase the intensity of your workout gradually. Please choose from our four different resistance/tension levels. To help you select the best band for your application, we have included a tension guide and pull-up guide in the images to the left. High Quality: resistance & stretch band is extra durable ,Made of 100% pure natural latex rubber and no smell. These high-quality bands are very durable and environmental protection so you can use them for many years.