product description Material: metal iron + polyester Recommended size: length 35cm, suitable for small dogs Length 50 < p >55cm length suitable for medium and large dogs 60cm length suitable for large dogs Features: Sharp dog spines around the head, Velcro strap protection adds to the overall appearance, makes the product looks more advanced, slows down the surface friction and delays rust. Dog training collars can help teach your dog basic obedience and commands. .Just pull the training collar and the dog will stop being naughty immediately. The ring is effective and safe and will not shock or hurt your pet. , while ensuring that your pet has much less pulling when you walk. Made of high quality stainless steel, this collar is built to last. In addition, this unique collar has a specially designed quick release buckle to secure and easily remove your dog’s leash. Give your dog a safe and comfortable application and your life will become better.