[You can train anywhere just by fixing it] With TRNR Door Anchor X, add exercise variations to your resistance gym. One of the many available components from the TRNR X series, the Outdoor Anchor X allows you to set up one or more Strength Tubes X and train them at different angles for functional movements. It can be used on sturdy doors and can be installed in the low, middle, or high position of the door according to the desired exercise. The soft neoprene lining minimizes damage from tube friction, making it safer and more durable. Note: Other TRNR X-Series components for completing the resistance gym (Strength Tubes X, Strength Handles X, Ankle Straps X, Strength Bar X, Outdoor Anchor X) are sold separately.