The Harbinger Multi-Gym Sport Fitness Trainer is a portable gym system that can be used to do pull-ups, sit-ups, push-ups and dips. This trainer targets your arms, chest, core and back muscles with workouts that ensure maximum muscle engagement. It features padded handles that allow for 3 grip positions to perform normal grip, close grip and hammer grip pull-ups. The 300-pound weight capacity makes it safe to use with a weight vest. Easy to install, the Multi-Gym Sport Trainer does not require any drilling and securely fits door frames 27" to 33" wide and up to 6" deep. It features a compact size for easy storage, rubberized door frame guard and adjustable height. Assembled Dimensions: 12" x 36.5" x 11".