This set contains 5 Loop Resistance Bands with 5 levels of resistance from 4-30Ibs (Light, Medium, Heavy, X-Heavy, XX-Heavy). The maximum pounds that can be achieved when all resistance bands are used together is 115 pounds, which is not only suitable for beginners but also for more advanced athletes to increase the intensity of basic movements.
http://www.ysdlinksports.com/resistance-band/