EASY TO KEEP THE PET - In order to prevent the owner from not finding their cat and to prevent the cat from getting lost and injured, the Airtag cat collar was designed. Size S: 1.5 x 40 cm unfolded length, adjustable: 25-40cm, weight: about 26g, suitable for dogs about 15-17kg.Size M: 2.0 x 55 cm unfolded length, adjustable: 35-55cm, weight: about 44g, suitable for dogs about 17-32kg.Size L: 2.0 x 65 cm unfolded length, adjustable approx.: 40-65cm, weight: about 61g, suitable for dogs about 32-41kg.For Apple AirTag Case Pet Collar (Airtag not included) HIGH QUALITY CAT COLLAR - The Air Tag Cat Collar is made of well-stitched nylon material that protects your cat's neck from chafing when it is asset. The Breakaway Cat Collar's quick release buckle is made of high quality sturdy plastic and can be quickly released with one hand. We use a thick D-ring which provides a secure attachment point for your cat leash and other hanging accessories. PROTECT YOUR PET! - In order to prevent your cat from being scratched, we do not use the pointed earring design in the market, we use round eyelet design, the cat's neck can be well protected and will not be scratched . If your cat becomes trapped, the safety buckle releases when released, preventing the cat from choking in extreme situations and keeping the cat safe. ADJUSTABLE COLLAR SIZE - The length of the collar is adjustable 13.8inches. This is a great product and perfect for most small animals like cats, dogs, kittens, puppies and chihuahuas.