The package only including an Airtag Collar Holder Case In addition to dogs, can cats also wear it? Of course, this product is very comfortable to wear with zero dangle! Is this waterproof? Our Airtag holder has a 360 ° full coverage upgraded waterproof design, ensuring its protection against water damage. What size collars will this fit? 【Waterproof Design】The 360°coverage design can completely wrap around the airtag, with strong waterproof function, preventing damage to the airtag when pets splash water, and will not block the airtag signal. This can provide maximum protection for dogs who like to swim. 【High-Quality Material】Our air tag collar holder is made from high quality soft silicone material which is very soft and stretchy. These advantages make it easy for you to wear it through your pet's belt. With this Airtag Collar Holder, will bring great convenience to your life and from now on you will never worry about losing your precious baby. ; 【Wide Range of Applications】 Our compatible with apple airtag dog collar holder can compatible with collar within 0.8-1.3 inch, and you just need to thread it through your dog's tag holder to track your pet on your phone at any time. It can be used not only for pets, but also for children's backpacks, elderly people, cameras, luggage and much more. 【What You Will Get】dog/cat collar air tag holder (air tags and collar not included). This is a compact, cute holder for your pet's airtag. Tips: Make sure you give it a few extra pushes when you put the cover on. 【Waterproof Design】The 360°coverage design can completely wrap around the airtag, with strong waterproof function, preventing damage to the airtag when pets splash water, and will not block the airtag signal. This can provide maximum protection for dogs who like to swim. 【High-Quality Material】Our air tag collar holder is made from high quality soft silicone material which is very soft and stretchy. These advantages make it easy for you to wear it through your pet's belt. With this Airtag Collar Holder, will bring great convenience to your life and from now on you will never worry about losing your precious baby. ; 【Wide Range of Applications】 Our compatible with apple airtag dog collar holder can compatible with collar within 0.8-1.3 inch, and you just need to thread it through your dog's tag holder to track your pet on your phone at any time. It can be used not only for pets, but also for children's backpacks, elderly people, cameras, luggage and much more. 【What You Will Get】dog/cat collar air tag holder (air tags and collar not included). This is a compact, cute holder for your pet's airtag. Tips: Make sure you give it a few extra pushes when you put the cover on. 【Waterproof Design】The 360°coverage design can completely wrap around the airtag, with strong waterproof function, preventing damage to the airtag when pets splash water, and will not block the airtag signal. This can provide maximum protection for dogs who like to swim. 【High-Quality Material】Our air tag collar holder is made from high quality soft silicone material which is very soft and stretchy. These advantages make it easy for you to wear it through your pet's belt. With this Airtag Collar Holder, will bring great convenience to your life and from now on you will never worry about losing your precious baby. ; 【Wide Range of Applications】 Our compatible with apple airtag dog collar holder can compatible with collar within 0.8-1.3 inch, and you just need to thread it through your dog's tag holder to track your pet on your phone at any time. It can be used not only for pets, but also for children's backpacks, elderly people, cameras, luggage and much more. 【What You Will Get】dog/cat collar air tag holder (air tags and collar not included). This is a compact, cute holder for your pet's airtag. Tips: Make sure you give it a few extra pushes when you put the cover on.