【Suitable for small to medium dogs】 Size M is suitable for dogs up to 15kg. 【Durability】 This dog training retractable leash is made of durable and sturdy nylon. The non-slip brake and release button keep the rope in place. 【Enjoy Walks】 Extend the non-slip leash when walking on open tracks or running around in the park. When calling your dog back, simply press the button to recall them. 【Retractable Dog Leash】 The retractable dog leash extends up to 5cm. A single lock/release button retracts and extends instantly. The nylon tape/ribbon style retractable dog leash provides enough space for your dog to explore while ensuring durability.