
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 your 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 | Fits Length | Fits Necks | Fits Chests |
| XX-Small | Up to 6" | 6" - 10" | 10" - 14" |
| X-Small | 8" - 12" | 8" - 12" | 12" - 16" |
| Small | 10" - 14" | 10" - 14" | 14" - 18" |
| Medium | 12" - 16" | 12" - 16" | 16" - 20" |
| Large | 16" - 20" | 16" - 20" | 20" - 24" |
| X-Large | 20" - 24" | 20" - 24" | 24" - 28" |