The product1. [Multi-color Safety] Our puppy collar contains several different colors, enough to meet your needs, let you easily identify your puppy, boy and girl puppies are cute. If your puppy gets stuck in something, the clasp automatically and quickly releases under pressure. There is enough resistance in the tripping part, not easy to tripping.2. We upgraded these dog collars. Not only do they have cute puppy patterns, but glow (white part mode) after absorbing light in the dark, the collar needs to first absorb light (such as sun or lamp light) and then carry it to a dark place.3. [2 Anti-Lost ID Card] Each tag contains mini tags for pet owners to fill in their name, address, telephone number or contact information. Anyone who finds your pet can contact you to return your pet based on the information you have written down. The capsule design can protect your personal privacy from being leaked. Note: Be sure to tighten the capsule when using.4. Our dog collars are in size, S -(adjustable from 6.8 -10.2 inches,2/5 inches wide), -M -(adjustable from 9.0 -. -12.0 inches by 2/5 inches wide), measure your puppy before purchasing (with rope or tape measure), each size is adjustable and easy to operate to meet your growing puppy