Finally found ones that don't fall apart! I have 4 dogs and love these as they don't get worn or scratched like id tags do BUT the last ones I bought (elsewhere) for my 2 newest dogs never worked, they would open after a week of them running around in the yard and the bottom half would be gone. So far these are fabulous! They have had them on for almost a month or more and they are still intact! These id capsules are the greatest thing for a VERY reasonable price! Highly recommend them if you care about your dog or cat!