How to Choose the Right Harness Size for Your Dog

How to Choose the Right Harness Size for Your Dog

Why Getting the Right Harness Fit Matters

A well-fitted harness is one of the most important investments you can make for your dog's comfort and safety. Too loose and your dog can slip out; too tight and it can restrict movement, cause chafing, or even affect breathing. Getting the fit right means happier walks for both of you.

Step 1: Measure Your Dog Correctly

Before you shop, grab a soft measuring tape and take two key measurements:

  • Chest girth: Measure around the widest part of your dog's chest, just behind the front legs. This is the most important measurement for harness fit.
  • Neck circumference: Measure around the base of the neck, where a collar would sit.

Always measure with your dog standing naturally, and add two fingers' worth of space to ensure comfort.

Step 2: Match Your Measurements to Our Size Guide

Every harness in our dog harness collection comes with a detailed size guide. As a general rule:

  • XS: Chest 30–40 cm — ideal for toy breeds like Chihuahuas and Pomeranians
  • S: Chest 40–52 cm — suits Miniature Dachshunds, French Bulldogs, and Pugs
  • M: Chest 52–65 cm — great for Cocker Spaniels, Whippets, and Border Collies
  • L: Chest 65–80 cm — fits Labradors, Golden Retrievers, and Boxers

If your dog falls between sizes, we always recommend sizing up and adjusting the straps for a snug fit.

Step 3: Check the Fit Once It's On

Once your harness arrives, do a quick fit check before heading out:

  • You should be able to slide two fingers comfortably under any strap.
  • The harness should sit flat against your dog's body without twisting or bunching.
  • Your dog should be able to move their legs freely without the harness riding up.
  • Check that the chest plate sits in the centre of the chest, not on the throat or shoulders.

Which Harness Style Is Right for Your Dog?

Beyond size, the style of harness matters too. Our harness range includes options suited to different needs:

  • Step-in harnesses are brilliant for dogs who dislike things going over their head.
  • Over-the-head harnesses offer a more secure fit and are great for pullers.
  • Padded harnesses are ideal for dogs with sensitive skin or those who wear their harness for long periods.

Pair your harness with one of our matching dog leads for a coordinated look that's as stylish as it is practical.

Still Not Sure? We're Here to Help

Choosing the right harness can feel overwhelming, especially for new dog owners. If you're unsure which size or style is right for your pup, don't hesitate to get in touch — we're always happy to help you find the perfect fit.

Browse our full dog harness collection and find the one that's made for your dog.