Features: 1. Convenient: One-click operation can change the length of the rope, which is more convenient to use. 2. Free: 3M-5M can be scaled up and down to give dogs enough range. 3. Robust: Professionally tested tensile force. You can use it without pressure. 4. Ergonomic: Humanized ergonomic handle design. 5. Safe: It protects your pets at all times so that there is no need to worry about the safety of your pets.