For AirTag Tracker Silicone Case Rainbow Gradient Pet Cat Collar With Bell 1. Material: nylon + silicone 2. Made of soft skin-friendly fabrics, comfortable and breathable, safe and sturdy 3. Adjustable collar, comfortable and no strangulation, suitable for most cats, dogs and small pets 4. Easy to wear and remove, beautiful and durable, firmly fixed AirTag, waterproof and shockproof, travel more assured 5. Our cat collar is specially designed for AirTag, you can easily find and track your pet through your mobile phone 6. The collar is designed with an anti-smothering safety buckle, which automatically unlocks when the collar is disturbed by external forces exceeding 3kg to prevent your cat from being injured 7. Weight: about 15g 8. Size: adjustable collar size of about 25-40cm, width of about 1.5cm (suitable for 5-17kg pets) 9. Note: shipping only the protective case + collar, does not include the AirTag locator