Product Description Material: metal iron + polyester Recommended size: length 35cm, suitable for small dogs Length 50 Length 55cm suitable for medium and large dogs Length 60cm suitable for large dogs Features: Sharp dog points around the head, Velcro protection helps to general appearance. looks more advanced, slows down surface friction and retards rust. Dog collars can help you teach your dog basic obedience and commands. .Just pull the training collar and the dog will stop being naughty immediately. Effective and safe, the ring will not shock or hurt your pet. while ensuring your pet has much less pulling when walking. Made of high quality stainless steel, this collar is built to last. Plus, this unique collar features a specially designed quick-release buckle to make it easy to attach and remove your dog’s leash. Give your dog a safe and convenient application and your life will be better.