One button brake and lock safety system : the reliable lock button gives you capability to adjust the leash's length when needed allows the leash to stay at a constant length to ensure you could absolute control the safety of your dogs and yourself Retractable leash : retractable cord leash extends up to 3 meters ensure that you could walk with full control of your dog with instant retraction of the leash when required and give your dogs more freedom to wander sniff and poke around Comfortable and safety : ergonomic tpe anti-slip handle is easy and safe to grip provides enjoyable walking experience with your pets and you don't worry about the dog leash will hurt your hand when the dog run about madly Make sure that all parts of the leash and your dog's collar are in good condition