Chin up pull up sit up bar ultimate doorway gym is a multifunction training system that raises the bar on upper body exercise. Now you can turn any door into your own personal gym in just seconds. Its unique design wraps around your door frame and uses leverage so there are no screws and no damage to your door. Begin your routine in the doorway with chin-ups and pull-ups to develop and strengthen your shoulders, arms, back and lats. Take your gym to the floor for deep push-ups and a greater range of motion without strain on your wrists. Gyms sturdy base is ideal for triceps dips on the floor. Finish your workout at the base of your door with gut-blasting crunches for rock-hard abs and oblique’s. Plus, with 3 different grip position narrow grip, wide grip and neutral you can switch up your routine and keep challenging your muscles.