Designed for Pet Collars: Our protective silicone cover is suitable for pet, dog collars with a diameter between 0.8" and 1". You can install the tracker on any attached objects, such as backpacks and shoulder bags. No signal blocking: the protective case is made of environmentally friendly silicone, anti-scratch, anti-lost, metal free - no one-time blockage, no problem to find depending on your pets. Portability: Airtags case keeps Air_tags in place and hard to fall off. In your daily life, if you go out with your pet, you don’t have to worry about losing it. Choose Mutil Color: The silicone case can be chosen in different colors to match your your airtag dog collar will. We have concocted some combinations for you. You can share this good product with neighbors who have pets or buy it with friends in need. It’s a good choice.