The product description 1. Recommended by vets and trainers, the best design for everyday use. To avoid running away and adopt correct behavior, canine training gives you gentle control over your animal. Martingale collars are a better choice for standard collars. 2. [Durability] The dog collar made of soft and silky polyester ribbon, strong and durable, does not loosen or wear; Strict drawing test is done before production. Properly fitted, the collar will be comfortably loose as long as the dog does not pull on the leash. 3. [Warning] Quick clasp release - can be quickly opened in an emergency. Martingale collar not suitable for lashing. Don’t leave your dog without a collar. This product is not recommended/designed for use without a belt, not for indoor use 4. [Exact Measurement] Make sure there are only 2 fingers between the collar and the dog’s neck. Especially for visually impaired dogs, choose a collar large enough to slip over the head (the right collar leaves no room for your