360 High ReflectionThis AirTag dog collar has a uniquely designed built-in silicone AirTag case which ensures a secure fit and is compatible with the Apple AirTags.The edge of the air tag dog collar with 2 high reflective straps, which can enhance your dog's visibility in a variety of low light conditions,easily found your pet under dark environment. Comfortable fitThis airtag dog collar is made of high quality nylon fabric,which is tough enough to resist forces from the most energetic dogs.It is very strong and durable while ensuring your dog is comfortable to wear and will keep your Airtag protected. Easy to useThe Apple tracker tag slides onto a high-quality pet collar. Its easy to insert your device. The quick-release buckle and D-ring hardware make it easy and quick to go. Size ChartS: Width 2.0 cm, Neck size 25-40 cm; M: Width 2.0 cm, Neck size 35-50cm L: Width 2.0 cm, Neck size 40*60cm. Note: Please measure the width of your pet's neck before purchasing.