Compatible Type: The AirTag collar holder is specially designed for GPS Tracker. It can be attached to a cat collar for cats, puppies, and other small pets. Upgraded Size: Smaller than most other collar holders, suitable for AirTag cat collars with a width within 3/8 inches. A great accessory for cats and small pets like Chihuahuas. Premium Material: Made of skin-friendly, washable soft liquid silicone material. Provides all-around protection to the device from scratches. Easy to Use: Insert the GPS Tracker (not included) into the collar holder, then track your pet using your smartphone. The slide-on design fits cat and dog collars and any strap-based accessory. Color: Black Material: Silica Gel Size: 31mm Package Contents: 2 x Cat Collar Holder Note: Light and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.