Classic Durable Pet Collars for Dogs With The Highest Quality Nylon Webbing, Thread and Hardware 1" Width, Fits Neck 12-20", with the strongest side release buckle. Machine wash in cold water.Line dry. Size: Medium pet collars adjusts for a neck size of 12-inch to 20-inch;Suitable for Maltese Poodle, Terrier, Jack Russell, Scotty, Pug and similar sized dog breeds.