Explore Dog Harness Sizes That Keep Your Pup Active & Safe

Introduction

Walking your dog should be a joy—not a struggle. But a poor-fitting harness can frustrate both of you. This guide helps you choose the right dog harness size to keep your pup safe, active, and comfortable. Let’s explore tips and recommended picks from PetToyBarn.com to make every walk better.

Man walking a golden retriever on a leash in a park

Why The Right Dog Harness Size Really Matters

Choosing the right harness that fits well improves safety, comfort, and control.
Too tight? It may restrict movement or breathing. Too loose? Your dog might slip out.

A proper fit distributes pressure across the chest, not the neck—reducing risk for pullers.
Large breeds especially benefit from a harness that keeps them secure without discomfort.

When dogs feel good, they’re more likely to enjoy walks, play more, and stay healthier.

size isn’t just about aesthetics—it directly impacts your dog’s health, movement, and safety. A harness that’s too tight can chafe or restrict breathing. Too loose? Your pup might wiggle free.

A properly fitted harness helps distribute pressure across the chest—not the neck.
This reduces the risk of injury for dogs that tend to pull on the leash.
Especially for large breeds, a secure harness helps maintain control without discomfort.

When your dog feels comfortable, they’re more likely to enjoy walking, running, and playing—making exercise something to look forward to.

How To Measure Your Dog For The Right Harness Size

Before buying a harness, measure twice—buy once. Here’s how:

Step 1: Measure Chest Girth

Wrap a soft tape measure around the widest part of your dog’s ribcage (just behind the front legs).
This is the most important measurement for selecting harness sizes.

Step 2: Measure Neck Circumference

Some harnesses require neck measurements too—wrap the tape where a collar would sit.

Step 3: Use a Size Chart
Refer to the brand’s sizing chart, which typically categorizes as:

Size	Chest Girth (in)	Dog Weight (lbs)
XS	13–17"	Under 10 lbs
S	17–22"	10–25 lbs
M	22–27"	25–50 lbs
L	27–32"	50–80 lbs
XL	32–42"	80+ lbs (large breeds)

Always allow room for two fingers under the straps—snug, not tight.

Hand measuring a dog’s chest girth using a soft tape measure.

Recommended Dog Harnesses For Large Breeds

Larger dogs need gear that’s tough, breathable, and easy to control. These are some recommended dog harnesses for large breeds loved by PetToyBarn.com shoppers:

Dog Jacket with Harness

Two-in-one functionality! This jacket provides warmth during colder walks while integrating a sturdy, adjustable harness. Great for big dogs who love outdoor adventures.

Durable clips and reinforced stitching
Reflective trim for visibility
Waterproof and breathable

16FT Tangle-Free Dog Leash with LED

Pair your harness with this smart leash for a full walking kit. Ideal for early morning or nighttime strolls.

Dual-headed with built-in lighting
Smooth retraction system
Adds safety and convenience

Professional Pet Grooming Kit

Okay—it’s not a harness. But regular grooming helps the harness sit comfortably on the dog’s coat, preventing matting or irritation.

Includes clippers, combs, and trimmers
Designed for thick-coated large dogs
Keeps your pup looking (and feeling) great

Keep Your Dog Stimulated & Happy On Walks

A great harness helps your dog enjoy movement—but why stop there? Use walk time to stimulate their mind and body.

With the right harness fit, your dog can focus better during training. Practice commands like “heel,” “wait,” and “sit” during walks to keep their brain active.

Happy dog playing with an automatic toy in the backyard after a walk.