The Tunturi Multifunctional Door Gym is a fitness device to use at home without the need for screws or a complicated installation. You use the chin-up bar for strength training with your own weight. You lock the door trainer at the top of your doorpost for pull-ups. Or at the bottom for crunches. You can also use it on the floor for support with push-ups. The foam protects your doorpost from damage. After your training you can easily store the bar under your bed or in the storage room.