Custom Order Dory Collar. Slide Adjustable Metal Buckle Collar for Alexa and GEB Puppy Dory These collars are custom made, so Please make sure to measure your dog’s neck accurately. Collar Size is 1 inch wide by: M - fits up to 18 inches L - fits up to 24 inches The best thing about buying a Sarandipity Pet Wear collar is you get a gorgeous collar for your best friend and a portion of proceeds goes to Guiding Eyes for the Blind and/or BluePath Service Dogs. It's a win-win, you get something and you give something! Remember, collar safety is your responsibility. Only you can determine the suitability of this collar for your pet and individual situation, including width and buckle style. Please be sure to inspect your collar on a regular basis.