When trying to decide between two sizes, choose the larger size for a better fit.

SizeChestNeckBreed Examples
Extra Small127Teacup and Puppies under 5 lbs
Small1411Chihuahua, Pomeranian, Australian Terrier, Yorkshire Terrier, Toy Poodle
Medium1715Pug, Maltese, Jack Russeli Terrier, French Bulldog, Boston Terrier
Large2022Bichon Frise, Beagle, Cocker Spaniel, Corgi, Scottish Terrier
Extra Large2428Springer Spaniel, Brittany Spaniel, Collie, Bulldog, Schnauzer
2X Large3236Doberman Pinscher, Golden Retriever, Labrador Retriever, Pit Bull