We bought two tags - one for my puppy’s tiny baby collar, and one for our adult dog’s bully billows collar. We measured up her collar and bought the appropriate size, but it does seem a little tight on the bully billows collar. It scrunches up the collar a little bit, and the bands themselves look tight, so I worry a little that they might snap in time. So far so good though! Just maybe would have bought a size up in retrospect
