Design concept: It is designed for Airtag GPS trackers for small animals such as dogs and cats. The airtag collar comes with an air tag case and is waterproof and shockproof. Specification: Designed for cats and small animals the small collar is retractable and out of reach of pets. Safety collar - The reflective collar is designed with a breakaway safety clasp that easily releases when pulled hard, making it safer for your pet when walking around the house. Adjustable collar size: adjustable length to fit pet neck sizes from 22 to 35 cm.1cm wide, fits most small dogs and small pets Reflective nylon kitten collar features a bell-shaped design to keep your pet visible in dark environments Feature: Material: nylon + reflective strip, Product Name: Air tag Cat Collar Weight: approx. 15g NOTE:Protective Collar only, other accessories in the picture is not included(no Airtag inside)