ti-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 box Air 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 22 to 35cm. 1cm 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.