A. Measure length of pet’s back from the base of the neck to the base of the tail.
B. Measure neck circumference.
C. Measure the broadest part of the chest.
If the measurement is between sizes, we recommend going up one size. Also, if pet has a stout build, a deep chest, or is overweight, we recommend going up a minimum of one size for proper fit. If the dog is long-backed, like a Dachshund, a smaller size is recommended.

The estimations by breed, below, are for approximation only.
X-Small: Cat, Yorkshire Terrier,
Chihuahua, Maltese, Italian Greyhound, teacup Chinese Imperial
Small: Beagle, Boston Terrier, Cocker Spaniel, Pug, tiny Chinese Imperial
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 Length
|
Fits Necks |
Fits Chests |
|
XX-Small |
Up to 6" |
6"-7½"
|
9"-11" |
|
X-Small |
6"-8" |
7½"-9" |
10"-12" |
|
Small |
8"-12" |
9"-12" |
12"-16" |
|
Medium |
12"-16" |
12"-14" |
16"-20" |