Retractable dog leash: Features a smart lock button to adjust the desired leash length and an instant retractable button to pull the dog in an emergency (if needed). It gives you full control to ensure the safety of your dog and the public. Quick lock function: Easy to brake/pause/lock, there is a one-handed brake button in a convenient place, with a pause function, you can adjust the distance between you and your pet at any time. Ergonomic handle: The ergonomic non-slip handle makes you feel comfortable during long journeys. Durable nylon tape and ABS plastic shell, corrosion-resistant chrome hook, built-in precision stainless steel bearing, can prevent the belt from getting caught. Safety Check: Our adjustable leash length offers your dog freedom and safety in open spaces. With our retractable design, it can be kept tight on treacherous roads. Suitable for most dogs: This 5m extendable leash for small and medium dogs can hold up to 44 pounds . It is an ideal choice for puppies and small to medium sized adult dogs.