Designed based upon feedback from personal trainers and strength coaches, the Lifeline(R) Pull Up Revolution Pro has been proven to increase pull up strength more than 70% in 60 days with regular usage. With a durable support strap and reinforced foot stirrup, the Pull-up Revolution Pro is ideal for the punishing usage at health clubs and training facilities. Strengthen Your Results Progressively get stronger-decrease assistance over time Installs quickly and easily (even on wider diameter pull-up bars) 125 pounds of adjustable power assistance Durable support strap and reinforced foot stirrup Additional Details Included: a webbed belt for assisted push-up exercises, and a full-color wall poster-illustrating beginner, intermediate and advanced pull-up and push-up exercises 60 day limited warranty