You don't need a gym to get a full TRX workout. You just need a door, and the TRX Door Anchor. This door anchor 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 the door Anchor 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.