Use your TRX Suspension Trainer anywhere with this easy-to-set-up Door Anchor. Quickly attaches to any solid door and won't damage paint or wood. You don't need a gym to get a full body workout. Just a door, the TRX Suspension Trainer and this simple, yet handy Door Anchor. With its nylon, high-density foam and felt system, it slips easily over the top of any solid wood or metal door. With the door shut, you get 100% sturdy support and it won't scratch or damage paint or wood. 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 your total-body TRX workout.