Anti-lost Tracker Collar: Put an airtag into the collar with holder to build a lightweight GPS Tracker. You can track your pets through the Find My app on iPhone (Airtag not included in the boxAir Tag Holder: The apple air tag holder is waterproof and shake-proof, silicone material can prevent your tracker from being scratched. Slide-on installed design makes your pets away from the holder, specially designed for small collars.Adjustable Collar Size: The collar length is adjustable, suit for pets neck from 8.66" to 13.78". 3/8" in width, great for most small animals like cats dogs kittens puppy and chihuahua.Breakaway Cat Collar: The collar comes with a safety buckle and bell design. The bell is removable, and with the safety buckle, it is easy to release when pulling with force, much safer for your pets.Reflective Nylon Collar: Nylon Reflective paw pattern is much cute than usual reflective strip. It makes your pets can be seen in the dark environments clearly to reduce accidents happen.