Designed for Pet CollarsOur silicone protective case is suitable for pet collars,dogs,with diameter between 0.8" and 1". You can install the tracker on any strapped objects, such as backpacks and shoulder bags. PortabilityIn your daily life, when you go shopping with your pet, play on the beach, camp in the mountains, travel, etc., you must don't worry about losing your pet anymore. Can also be put on the backpack to prevent loss. Mutil Color ChooseThe silicone case can be choose different color to match your airtag dog collar. We have put together some combinations for you. You can share this good product with neighbors who have pets or buy it with friends in need. This is a good choice. Airtag CompatibilityIn your daily life, when you go shopping with your pet, play on the beach, camp in the mountains, travel, etc., you don't have to worry anymore, losing your pet more.