Door Gym Material: steel, PE, Foam Tube thickness: 1.5mm maximum weight: 300lbs 5pcs/carton Door GymYou can do pull ups and chin up, sit up, and dips. In addition, with the bonus mail-in offer, you can get AB straps that allow you to hang in mid air to further strengthen your core abs!pull up bar is the multi function training bar that combines every exercise you need to build a powerful upper ...