Sizing Guide:
(See below for recommended sizing by breed)

Back: Measure length of pet’s back from the base of the neck to the base of the tail. See below for estimating by breed.

Neck: Measure the circumference of pet’s neck for a snug fit. No need to add inches as you would with a collar.

Chest/Girth: Measure girth around the broadest part of the chest and add 2”.

Note: If the dog has a stout build, select one size larger.

Recommended sizing by breed:

XX-Small: Teacup and dogs under 5 lbs
X-Small: Australian Terrier, Chihuahua, Pomeranian, Toy Poodle, Yorkshire Terrier
Small: Boston Terrier, Jack Russell Terrier, Maltese, Pug, Silky Terrier
Medium: Bichon Frise, Beagle, Cocker Spaniel, Corgi, Scottish Terrier
Large: Brittany Spaniel, Bulldog, Collie, Schnauzer, Springer Spaniel
X-Large: Doberman Pinscher, German Shepherd, Golden Retriever, Labrador Retriever, Rottweiler
XX-Large: Irish Wolfhound, Great Dane, Mastiff, Newfoundland, St. Bernard

Size	Length	Fits Neck	Fits Chest
XXS	6"	6"-8"	10"-12"
XS	8"	8"-10"	12"-16"
S	12"	10"-12"	16"-18"
M	16"	12"-16"	18"-24"
L	20"	16"-20"	24"-30"
XL	24"	20"-24"	30"-36"