You don't need a gym to get a full TRX® workout. You just need a door, and the TRX® Door Anchor. The Door Anchor's nylon, high-density foam and felt system slips easily over the top of any solid wood or metal door. Then, just shut the door and you get 100% sturdy support. It won't scratch or damage paint or wood, and it folds up for easy storage and portability. Use it at home, in the office or on the road. It even comes with a handy “Workout In Progress” safety placard. Just hang it on the outside of the door and get to it.