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:

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