[Premium Fabric]-- Our airtag dog collar is made of high-quality durable full head-layer natural cowhide leather. The dog collar with Apple airtag case can absolutely withstand the dog's play, and will not be easily torn or broken. And with an upgraded flannel lining, it will not strangle or rub against the dog's neck, allowing your dog to have a comfortable and soft-wearing experience. Far from those fake leather, suede, low-quality material collars, this is the dog's favorite airtag collar [Upgraded Holder]-- Our leather AirTag dog collars feature a built-in holder into which Apple AirTag can be inserted. We have upgraded and reinforced the AirTag bracket: The built-in holder and the collar belt are not only pasted with superglue but also reinforced with a full range of sutures. And with two upgraded hardware buttons and a solid reinforced strap in the middle. Five measures to protect the AirTag bracket, never worry about your Apple AirTag falling off due to your dog's movement [Size Adjustment Upgrade]-- Our apple airtag dog collars are available in sizes L and S and have been upgraded for size adjustment. Compared with the old dog collar, we have added more pin buttons to maximize the adjustment effect of the collar. In addition, there are two premium lock loops where the collar slides, for a thicker and firmer upgrade, they will not loosen easily and can fix the extra protruding leash well, and you don't have to worry about the dog pulling the collar off and chew. [Real-Time GPS Tracking]-- Our pet leather collars are compatible with Apple AirTag 2021, insert the AirTag into this double buckle custom-designed dog collar, no matter where your dog is playing, you can track your dog's location in real-time and find it easily it. In addition, the neck circumference of our dog collar is 3cm, without feeling thick and bulky. We use genuine leather material, which will not fade and will not cause the Apple airtag collar leather to be damaged or broken.