Harness Size Guide
EXTRA SMALL HARNESS
Neck: 29cm – 36cm
Chest: 36cm – 48cm
Eddie the Chihuahua wears an Extra Small.
Weight: 3.5kg
Neck: 25cm
Chest: 34cm
SMALL HARNESS
Neck: 35cm – 44cm
Chest: 41cm – 54cm
Pippa the Welsh Terrier wears a Small.
Weight: 8kg
Neck: 32cm
Chest: 57cm
MEDIUM HARNESS
Neck: 39cm – 51cm
Chest: 46cm – 61cm
Morty the Pug wears a Medium.
Weight: 8.5kg
Neck: 42cm
Chest: 51cm
Nala the English Cocker Spaniel wears a Medium.
Weight: 11kg
Neck: 33cm
Chest: 60cm
LARGE HARNESS
Neck: 42cm – 56cm
Chest: 57cm – 83cm
Rick the French Bulldog wears a Large.
Weight: 14.5kg
Neck: 46cm
Chest: 59cm
Fit Finder
Find their size in every piece
Enter your dog's measurements and weight. We'll match them to our collars, harnesses, teddy jumpers and knitwear, and show you a Mister Woof dog with a similar build.
Neck
Around the base of the neck, where a collar sits. Fit two fingers under the tape.
Chest
Around the widest part of the ribcage, just behind the front legs.
Back length
From the base of the neck, along the spine, to the base of the tail.
Between sizes?
Deep chests and long backs should size up. Exchanges are easy if the fit isn't right.