Upgraded Door Anchor for Resistance Bands: Exercise movements , change exercise patterns, work different muscle groups such as shoulders, arms, legs, glutes, resistance band training, back, great for arm and shoulder physiotherapy. Sturdy and :Made of top quality such as material car seat belt, can withstand 500 pounds of high strength, we strengthen connection between anchor strap and door to improve wear resistance and stability. Exquisite stitching process, so you can be more secure in process of movement. Portable and Easy to Install:Wherever there is a door, there is your personal gym. The door anchor straps do not require any installation tools, you just need to wrap door anchor straps around door and secure fastening buckle to back of door without damaging your door. Bring a storage bag for your workout or while traveling. Colour:Black Material:Nylon + zinc alloy Size:5.1x2x0.5cm Package Contents: 1 x Door buckle Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.