Anti-lost Tracker : Put an into the with holder to a lightweight GPS Tracker. You can track your pets through the Find My app on ( not included in ) Air Tag Holder: The air tag holder is waterproof and shake-proof, silicone material can prevent your tracker from being scratched. -on installed design makes your pets from the holder, specially designed for small collars. Adjustable Size: The length is adjustable, suit for pets neck from 8.66inch to 13.78inch. 3/8inch in width, great for small animals like kittens and chihuahua. Breakaway : The comes with a safety buckle and design. The is removable, and with the safety buckle, it is easy to release when pulling with force, much for your pets. Reflective Nylon : 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. color:Black Material:Nylon+Silicone size:32cm Contents: 1 x Only the above content, other are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.