ADJUSTABLE SIZE CAT COLLAR: The cat collars are safety quick release and they are adjustable from 19-32cm in length, 1cm in width. If it's too loose, you can tighten it a little. SECURE QUICK RELEASE CAT COLLAR: Cat collars with bell have a strong safety release buckle, easy to open and close . The fluorescent collars have an easy-to-adjust strap made of high quality fabric, which is durable, soft and skin-friendly. RING: Cat collars with bells and safety release, you can find your baby easily. Nice loud bell to warn small birds, these cat collars have reduced bird casualties to zero. BRIGHT COLORS AND REFLECTIVE CAT COLLAR: Brightly colored reflective cat collars help you find your pet outdoors after dark and make your pet visible to cars on the road or your flashlight when you're looking for them. RICH COLORS CAT COLLARS: The cat collar is made of high quality fabric, which is durable, soft and skin-friendly. The color of the buckle and the collar is uniform, which makes the cat collar even more eye-catching. There are 12 different colors, you can choose the color according to your mood.