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, snug but not tight. 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”.
X-Small: Cat, Yorkshire Terrier, Chihuahua, Maltese, Italian Greyhound
Small: Beagle, Boston Terrier, Cocker Spaniel, Pug
Medium: Basset Hound, Bulldog, Keeshond, Norwegian Elkhound, Dalmatian
Medium-Large: Boxer, Standard Poodle, Golden Retriever, Labrador
Large: Afghan, Doberman, German Shepherd, Irish Setter, Rottweiler, Collie
X-Large: Great Dane, Great Pyrenees, Greyhound, Mastiff, Saint Bernard
| Size |
Fits Base of Neck to Base of Tail |
Fits Necks |
Fits Chests |
| X-Small |
Up to 8" |
7"-10" |
12"-14" |
| Small |
8"-12" |
10"-13" |
14"-18" |
| Medium |
12"-16" |
13"-16" |
18"-21" |
| Large |
16"-20" |
16"-20" |
21"-26" |
| X-Large |
20"-24" |
20"-22" |
26"-28" |