Features: OOTDTY Airtag Collar: Our airtag collar holder makes it easy to keep an airtag on your at all times. We use heavy duty buttons, and a strap to ensure the airtag stays securely on the collar. Comfortable: We use soft pu leather for the base of our airtags collar, which is breathable and flexible. This is an airtag collar cats will love. Use in Any Weather: We designed our collar airtag holder to keep the airtag safe from the weather. The pu leather holder on our airtag collar surrounds the airtag to protect it from rain, wind, and snow. How to Choose the Correct Size: To determine the size you need, wrap a soft measuring tape around the widest part of your cat's neck. When measuring leave a two finger gap to ensure our airtag collar holder fits comfortably. Sizing Guide: Our adjustable three size collar fits cats with neck measurements between 7.5 - 14.8 inches (19-37.5cm). Our airtag pet collar fits most cats and small dogs. Specification: Material: PUColor: BlueSize (Approx.): XS/S/MXS-Neck Circumference 19-26cm/7.5-10.2inS-Neck Circumference 23.5-30.5cm/9.3-12inM-Neck Circumference 28.5-37.5cm/11.2-14.8inWeight: Approx.30gPackage Includes: 1 Piece Pet Collar with Holder for Airtag (XS/S/M)note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!