Features: brand new and high quality Put an Airtag into this for cat collar with holder to build a lightweight tracking collar for your cats. It's designed for Apple Airtag GPS Tracker for small animals like for cat dog chihuahua. Airtag for Cat Collar Holder: The Airtag collar comes with an airtag for case, which is waterproof and shocking-proof. Specially designed for cats and small animals' small collars, slide-on installed, no reaches from your pets. Adjustable Collar: The length is adjustable, suit for pets' neck circumference from 3.15-6.3 inches (8-16cm). 0.79 inches (2cm) in width, great for most cats puppies and small pets. Comfortable and Durable: This airtag dog for cat collar is made of soft silicone, which is non toxic, comfortable, sweat-proof, scratch-resistant, and washable. Light weight of 45g, easy to carry on. Multi Colors: We offer 10 different beautiful colors for you to choose from. Package Includes: 1 Piece Pet Collar with Holder for Airtag (Black/Pink/White/Red/Yellow/Purple/Wine Red/Mint Green/Dark Blue/Lake Blue) Specifications: Material: Silicone Color: Black/Pink/White/Red/Yellow/Purple/Wine Red/Mint Green/Dark Blue/Lake Blue Size (Approx.): Collar-520x20mm/20.47x0.79in Adjustable Neck Circumference 80-160mm/3.15-6.30in Weight: Approx.45g 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!