The turquoise aluminum mini dog medical alert tags are a perfect scaled-down version of the original size medical dog tags, measuring 3/4" wide by 1 1/2" long. Offered with an accessory choice of either a 24" ball chain necklace or a spiral key ring for hooking onto a backpack or keychain! The medical alert dog tag necklace is reasonably priced to cover both departments if you choose! N-Style ID does not recommend necklaces for children. View our children's medical ID bracelets.