I bought this for my cat who needs to wear a tag to activate our cat door. We had already lost 2 collars that I bought at PetCo and I had hoped that these would be better- still "break-away" but maybe not as easily? Not the case, it's 2 months later and my cat has lost both of these collars as well. They are cute, but expensive and no more durable than the $2 version at your local pet store.