The Boulder Fit Door Gym is the ultimate training tool to strengthen and develop your shoulders, back, chest and arms. Unique rock climbing hand holds provide an advanced grip to challenge you during your workout. Rock climbing hand holds will help you build grip and forearm strength for all your outdoor adventures. Perform various exercises such as sit-ups, push-ups, dips and multiple grip positions of pull-ups on the Boulder Fit Door Gym. Simple assembly, portable and attaches to and removes easily from the doorframe without any hardware. Fits standard doorways.