Coastal Pet Safe Cat Adjustable Snag-Proof Nylon Breakaway Collar, Adjust 8" to 12", Purple. Adjustable breakaway collar is designed for the finicky feline, adjustable sizing to fit necks 7.5" to 11.5". Made of no-snag nylon material. The buckle on this collar is equipped to release when the cat's collar gets caught. Collar also hold up well so they don't need to be replaced too often. Designed for cat safety. Available in all colors.