Best Harness for a Bernese Mountain Dog

By the Riverside Berner Guide editorial team
Last updated November 9, 2026

The best harness for a Bernese Mountain Dog is one that fits your dog’s body, leaves the shoulders free to move, and suits how your dog walks right now. This page explains how to choose one. It doesn’t name brands or rank products, because fit matters more than any label, and we don’t sell gear.

You’ll learn how to measure, how to check the fit, when a front or back clip makes sense, and how to size a puppy who keeps growing. We also cover draft harnesses, collars and ID. It’s part of our Bernese care guide.

Why the best harness for a Bernese Mountain Dog comes down to fit

Berners are big dogs. The Bernese Mountain Dog Club of America (BMDCA) FAQ sheet says males stand 25 to 27½ inches at the withers and females 23 to 26 inches. Males generally weigh 80 to 115 pounds and females 70 to 95 pounds.

So you’re shopping for a harness for large dogs, and one that holds up when a strong dog leans into it. See our guide to Bernese size and weight for more on how big your dog may get.

No single design suits every dog. A 2023 study in the Journal of Applied Animal Welfare Science found that results varied by breed and breed type, and its authors advised assessing each dog individually when buying and fitting a harness.

Harness or collar? What the research says

The American Kennel Club’s harness guide quotes a veterinarian who says a harness spreads pressure across the chest and shoulders. It adds that a harness may help a dog that pulls by lowering strain on the neck.

Collars concentrate force in one place. A 2020 study in Veterinary Record tested seven collars and a slip lead on a model neck with a firm pull, a strong pull and a jerk. None of the collars kept pressure low enough to cut the risk of injury when a dog pulls on the lead.

A harness isn’t magic, though. In a 2021 study in Frontiers in Veterinary Science, 52 shelter dogs pulled harder and for longer in a harness than in a collar when they were trying to reach food. There was no such difference with a toy, and no clear rise in stress-related behaviors.

The lesson: a harness can protect the neck, but it doesn’t teach manners. Loose-leash walking still has to be trained, ideally early. Our Bernese training guide covers leash skills step by step.

How to measure your Berner

Measure before you buy. The AKC harness guide says to measure two places:

• Neck: around the neck where it meets the shoulders.
• Chest: around the widest part of the chest, usually just behind the front legs.

Use a soft cloth tape, or wrap a piece of string and lay it against a ruler. AKC’s collar guide gives similar advice for collars: go by your dog’s actual measurements, not the size estimates on a label.

When you first put the harness on, start a little loose and tighten it gradually. The aim, AKC says, is snug but not too tight.

How to check the fit

The two-finger check

AKC’s how-to guide says you should be able to slip two fingers under any strap. AKC’s harness and collar comparison says one finger is right for small dogs and two for large breeds.

The veterinarian quoted in the AKC harness guide thinks the usual rule can be a little too loose. Her version: you should have to squeeze two fingers underneath, without the harness feeling uncomfortable. The same guide notes that dogs with thick, fluffy coats may need the straps tightened a bit more so the harness doesn’t slip.

Movement and escape checks

The AKC harness guide suggests a few quick tests once the straps are adjusted:

1. Walk your dog and watch that the shoulders and legs move naturally.
2. Pull gently from different directions to make sure your dog can’t wriggle free.
3. Back your dog up to check the harness won’t slide over the head.
4. Look for rubbing, pressure points or sore skin after walks.

Check the fit again after grooming, after your dog gains or loses weight, and whenever the coat or activity level changes. A Berner’s thick coat changes through the year, so our grooming and shedding guide is worth a look too.

AKC’s comparison adds the risks on both sides. A harness that’s too loose can let a dog escape, and one that’s too tight can be uncomfortable or painful.

Front-clip, back-clip or dual-clip?

Where the leash attaches changes how the harness works. The AKC harness guide describes three options:

• Front clip: the leash ring sits on the chest. It often helps with a dog that pulls by turning the dog back toward you, though clipping on the leash is a little less convenient.
• Back clip: the ring sits between the shoulder blades. The veterinarian AKC quotes recommends these for well-trained dogs.
• Dual clip: both rings. She suggests starting on the front clip and moving to the back clip as your dog improves.

For a young Berner, AKC’s leash training guide quotes a trainer who recommends a front-clip harness for large puppies. It makes a puppy who starts to pull easier to redirect.

Shoulder freedom: what gait studies found

Researchers have measured how harnesses change a dog’s stride. Their findings are a good reason to watch your own dog move rather than trust a label.

A small 2019 study in Veterinary Record filmed nine dogs on a treadmill with no harness, a “restrictive” harness and a “non-restrictive” harness. Both harness types generally reduced how far the shoulder extended compared with no harness. Surprisingly, the harness called non-restrictive reduced it more than the restrictive one.

The larger 2023 study tested three popular harnesses on 66 dogs walking on a loose lead. It found differences in stride length, in how weight was spread between front and back legs, and in elbow angles. The authors added that pulling in a harness might restrict a dog more than loose-lead walking, and that this needs more research.

Neither study names a winner for Berners. The practical takeaway is simple: watch your dog walk and trot in the harness, and if the stride looks shorter or stiff, try a different fit or design.

No-pull harnesses and head halters

If you’re looking for the best no-pull harness, start by knowing how they work. The AKC harness guide says most use a front D-ring that tightens the harness slightly when the dog pulls. Its veterinarian says they help when the dog is bigger than the handler, when you’re pushing a stroller or when you have a mobility issue.

AKC’s comparison page says a no-pull harness puts pressure on the chest rather than the neck. It describes head halters as an option for large dogs that pull, giving the most control of the options it lists. Ohio State’s veterinary center puppy behavior guide also notes that a head collar can help manage an overactive adolescent on walks.

Whatever you choose, skip tools that work through pain. The American Veterinary Society of Animal Behavior (AVSAB) position statement says trainers should avoid choke chains, prong collars, shock collars and leash jerking. The BMDCA FAQ likewise says only positive training techniques should be used with Berners.

Sizing a growing Bernese puppy

A puppy’s harness won’t fit for long. The AKC harness guide says puppies need the fit adjusted, or the harness replaced, as they grow. AKC’s collar guide makes the same point about collars and says a growing puppy may go through several in the first year.

AKC’s leash training guide says a harness is generally better for puppies, because it puts no pressure on the neck if they pull. The harness should be snug enough that your puppy can’t slip out, yet loose enough not to limit movement. The same guide suggests a lightweight 6-foot leash and no retractable leashes.

Introduce the harness slowly. AKC suggests getting your puppy used to wearing it and having a leash attached, with rewards for calm behavior.

Keep walks gentle while your puppy grows. The BMDCA’s first-year guide says puppy exercise should never be forced, giving jogging as an example. Read more in how much exercise a Bernese puppy needs, and add a harness to your puppy supplies checklist.

Draft harness vs walking harness

Pulling a cart is a different job from a walk, and it uses different gear. The BMDCA’s draft work sheet describes two basic draft harness styles:

• Buckle harness: the traditional Swiss style, with a band that runs straight across the chest over the breastbone.
• Siwash harness: the style used in sledding, which the club says allows complete freedom of the shoulders that a buckle harness may restrict.

Some dogs prefer one style, so the club says to be flexible. Either way, it should fit fairly snugly without chafing.

A puppy can get used to wearing a harness and dragging light traces. But the BMDCA says heavy loads should wait until a dog is fully mature, at least two years old. Our guide to carting and drafting with a Bernese covers training, tests and regional club clinics.

Collars and ID for your Berner

Even if you walk on a harness, your Berner still needs ID. One simple setup is a flat collar that carries the tag, with the leash clipped to the harness.

For a Bernese Mountain Dog collar, AKC’s collar guide says to measure the neck and test the fit with two fingers. If two fingers won’t fit, the collar is too tight; if more fit, it’s too loose.

Texas A&M’s veterinary school explains that an ID tag lets anyone who finds your dog contact you directly. It recommends a microchip as well, since collars can slip off, but says a chip adds to a tag rather than replacing it. A chip is not a GPS tracker.

The school’s microchip article says to register the chip with the company under your name and phone number. Update the record whenever you move or change numbers, because a chip only helps if the contact details are current.

Hot weather and harness materials

The BMDCA FAQ says Berners do not do well in hot, humid climates. That makes material worth a thought if you live somewhere warm.

The AKC harness guide says mesh is breathable and light but less padded, so it can rub more. Nylon is durable but less breathable and can trap heat and moisture, and neoprene can also hold heat. AKC’s comparison page adds that a harness that’s too tight can be uncomfortable, especially in hot weather.

On warm days, check for damp, rubbed skin under the straps after each walk. Our guide to keeping a Berner cool in hot weather covers the rest.

A quick checklist before you choose

Use these questions in the store or at home, whatever the brand:

• Did you measure the neck and the widest part of the chest?
• Can you slip two fingers under every strap, and no more?
• Does your dog stay in the harness when you back up or pull gently?
• Do the shoulders and legs move freely at a walk and a trot?
• Is there a front ring if your dog pulls, or a back ring if your dog already walks nicely?
• Can it be adjusted as your puppy grows?
• Is there no rubbing or sore skin after a walk?

The AKC harness guide notes that a harness may help dogs with neck pain, breathing problems or heart disease. If your Berner has any of these, or seems sore in a harness, ask your vet before you choose.