"Beau" Dog Collar (matching dog harness and dog lead available separately). This black and white design will definitely put you on the stylish map. Strikingly Beau-tiful design will have your dog looking the very best for their daily walkies! Please refer to the following measurements for adjustable dog collars: XS - width approx. 1.5cms. Adjustable from 21-30cms X-Small would fit dog breeds; Chihuahua, Mini Dachsund and for most new puppies! S - width approx. 1.5cms. Adjustable from 28-42cms Small would fit dog breeds; King Charles Spaniel, Bichon Frise, Cavachons. M - width approx. 2cms. Adjustable from 33-51cms Medium size would fit dog breeds; Basenji, English Cocker Spaniel, French Bulldogs. L - width approx. 2.5cms. Adjustable from 41-66cms Large size would fit dog breeds; Chow Chow, Greyhound, Dalmatians.