[Advanced fabric] - - Our dog necklaces are made of high quality and durable natural cow leather. The dog necklace with the apple Airtag case certainly supports the dog game and will not be easily torn or broken. With An improved flannel lining, it does not strange or does not rub the dog’s neck, giving your dog a comfortable and soft sensation. & nbsp; Unlike these false leather collars, suede, lower materials, it is the favorite AIRTAG collar of the dog [upgrade support] - - Our leather dog necklace has an integrated support in which Apple Airtag can be inserted. We have improved And reinforced the AIRTAG support: the integrated support and the tie are not only glued with strong glue, but also reinforced by a full range of sutures. & nbsp; And there are two updated material buttons and a solid strengthening strap in the middle. Five measurements to protect ATTAG support never worry that your Apple ATTAG will stand out due to the movement of your dog [Update of the Sizing] - Our