Anti-lost Tracker Collar: Put an into the collar with holder to build a lightweight GPS Tracker. You can track your pets through the Find My app on ( not included in the box) Tag Holder: The tag holder is waterproof and shake-proof, silicone material can prevent your tracker from being scratched. Slide-on installed design makes your pets from the holder, specially designed for small collars.Adjustable Collar Size: The collar length is adjustable, suit for pets neck from 8.66inch to 13.78inch. 3/8inch in width, great for most small animals like cats dogs kittens puppy and chihuahua.Breakaway Collar: The collar 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 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.color:BlueMaterial:Nylon+Siliconesize:32cmPackage Contents:1 x CollarOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.