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Not all Y-harnesses are created equal

There is such a strong pushback about using collars or harnesses going across the shoulders, while no one seems to talk about the risks of using a poorly fitted/sized Y-harness. Many seem to think that any Y-harness is safe for their dog, which is not true. The unpopular truth is that a poorly fitting Y (or H) harness can cause the same health problems or injuries as a dog pulling in a collar or while wearing a cross-shoulder harness.

We already addressed the argument that Norwegian harnesses would always restrict the shoulders in another article. We noted that adjustment and the dog’s behavior are essential to determine if that style can work for your dog, and the same is true for the Y-harnesses! Finding a good fit is very hard, and there are many ways the straps can restrict the movement, change the natural posture or gait of the dog and cause rubbing/chafing. You want to be sure that the harness is comfortable all around so your dog can freely enjoy your time outside.

Let’s look into all the aspects of the harness fit so you can decide for yourself if a harness fits your dog well!

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

How Should a Dog Harness Fit?

I marked an ideal harness fit on the photos below, but to be honest, we rarely tested a harness so far that was perfect fit for Mia in every aspect. As you will see in the examples later, we usually ended up with a trade-off: if I adjusted the neck-straps ideally, the harness was way too close to the armpits; if it left room in the armpits, it was way too loose and low around her neck. Unless you have a custom harness or one with 5-6 adjustment points, you will probably face similar dilemmas with most harnesses.

We will talk about each of these section in more detail below but let’s start with a high-level overview of what to consider:

• Shoulders: I marked the approximate position of the shoulder joints on the photos below with the red Xs. If your dog pulls or lunges on the leash, you don’t want the neck-straps covering this section.

• Chest Bone: the chest bone is the spikey bone you can easily feel on the dog’s chest. You want the middle of the connection of the Y or H to be ON this bone.

• Armpits: leaving room behind the front legs allows the dog to move their legs freely while you also don’t want the straps to be too far back, putting pressure on soft tissue.

• Between the Front Legs: be sure that the chest piece isn’t too wide between the front legs and is not chafing the inside of the front legs.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

Below is an example of one of the harnesses that fit Mia well. The shoulder straps go above the shoulder; the chest straps are far enough to leave room for the legs to move back but not too far to put any pressure on soft tissue. The section on the back starts right before the shoulders, so it doesn’t make the neck movement uncomfortable.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

Harness Fit Details & Examples

Below I will bring many photos as examples of good and bad fitting sections on Mia. By no means my goal here is to show that one harness is good while the other is bad because all these would be a very different fit on another dog. My goal is to help you see what you need to look for on your dog!

Also, don’t forget that photos can be misleading; I can easily pick a picture of most harnesses when they look perfect and one where they hang too low, shifted to the side, etc. There are angles and body positions when the front of the harness might look way too low while it is actually okay in a relaxed position. I tried to bring photos where it’s easy to see my point and where the picture reflects how the harness was positioned in real life.

Best Harness Fit on the Chest Bone

The harness mustn’t slide up on the neck, so it doesn’t put pressure on the trachea. You want the “meeting point” of the chest section and the neck-straps to be on the chest bone and not on soft tissue.

I like to show a photo of the Line harness when asked about this because the orange loop on the front marks where the chest bone should be when the dog stands with heads up. Of course, it will position a little differently as they move, but it gives you a good general idea.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

Below is an example of a too big harness. It hangs lower than ideal even with the neck-straps tightened all the way.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

Below is an example where the chest plate goes a little too high up on the neck. This harness is too small, and the straps are already loosened all the way.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

Best Harness Fit on the Shoulders

Most people buy a Y-harness saying that they don’t want to put pressure on the shoulders with another design, but I see so many terrible fitted Y-harnesses which is doing just that. This can be due to the angle of the neck-straps, having a large harness, or having wide straps on a slim dog.

Example of a good shoulder fit below.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

The example below shows a harness that was too big for puppy Mia. The neck strap is not adjustable, the front sits too low, and the wide neck straps cover the shoulder joint.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

Another photo below of the slightly big harness which is also designed to go back in a lower angle. The combination of these makes the neck strap cross the shoulder joint.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

The harness below is an example of having a broad, sturdy neck section that would fit a wider dog perfectly but doesn’t work on Mia’s proportions.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

If you have a three-strap harness with a Y-front with or without a backpack, the same applies to the neck design: you still want the neck-straps to go above the shoulder.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

Best Harness Fit in the Armpits

Having a harness too close to the armpits can cause chafing, rubbing and it can change the dog’s stride and body posture creating joint and spine problems in the long run. While we want to be sure that the forelimb can freely move backward when the dog stops, we don’t want the chest straps to be farther than the last sternebra to ensure no weight is distributed on the soft tissue of the abdomen.

As a general guide, it’s ideal to have room for 2-3 fingers on medium dogs and 3-4 fingers for large dogs between the chest strap and the back of the front legs. For small dogs, this is hard to scale down since there are huge differences so just try to get a similar proportion.

Below you can see how this harness rubs Mia’s armpits when she steps.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

Below is a similar position where the leg can freely move back.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

Besides risking pressure on soft tissues, the other issue you will face with a harness positioned too far back is that the harness will slide up a lot when pulled forward before the front legs would stop it.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

A note again for three-strap harnesses: you want to be sure the middle strap sits far enough for comfortable movement, just with any Y-harness. When adjusting the last strap around the abdomen, you want to be sure that it is loose on the dog and will not pressure the stomach when the dog runs.

When dogs run at full speed or sniff the ground, the harness is usually pulled forward, so you want to be sure it is loose enough to move around freely. The fit is generally hard to see, even with Mia’s shorter hair. I use the same general guideline as for the room behind the front legs and adjust the third strap to fit three fingers under it easily.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

The Importance of the Width of the Chest Section Between the Front Legs

This aspect of the harness is usually overlooked unless the dog has sensitive skin and starts having issues on the inner section of the front legs. Padding on the chest section is essential, but it will rub, chafe, or just annoy the dog if the chest piece is too broad. This causes them to change the way they walk to avoid the uncomfortable feeling, which puts abnormal pressure on the shoulder joints.

Sometimes it is easy to immediately see that the harness is too wide between the legs, but sometimes it is harder to decide. An easy way to check it is to play a little fetch with and without the harness while you sit down to see the dog’s movement from their level.

The chest section of this harness is too wide for Mia.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

If you also have a narrow dog, you can look for a harness where the chest piece narrows instead of a straight design between the legs.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

The harness below has a narrow enough section right between the legs when Mia stands, but when she steps, her legs are still rubbing against it because the chest plate’s curve was designed for wider dogs.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

Where should the No-pull Front Clip be positioned?

I am writing another article on no-pull harnesses, their effectiveness, and adjustments, so I will not go down on that route here; I just wanted to point out that most harnesses have the no-pull ring sitting way too low on the chest. You will have the best steering power if the no-pull ring is on the chest bone, so the harness turns the dog instead of pulling their leg to the side, which will cause many different issues in the long run. If you plan to use the no-pull ring, be sure it is positioned right!

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

Below is a well-positioned no-pull loop.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

The no-pull ring being way too low.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

The role of the Buckles

Many harnesses only have buckles on the chest straps, which is fine for most dogs. With all buckles, symmetry is usually a good thing to look for because even a small plastic buckle on the chest strap can cause the harness to rotate to one side constantly. Needing to click two buckles on the chest strap instead of one makes putting it on 3 seconds longer, but in return, the harness will stay in position much better when the dog is running off-leash.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

If you have a dog who is nervous or doesn’t like to be touched, you might want to consider looking for a harness that has at least one buckle on the neck-straps, so you don’t need to pull the harness over the head. It can also be helpful if you have a dog with a proportionally big head, so the ideal neck adjustment wouldn’t allow the harness to go over its head.

So why is it that most harnesses come without buckles on the neck-straps? The advantage of not having buckles on the neck strap is that there is a lower chance of chafing from the hard plastic buckle and that the buckles cannot suddenly fail if the dog would lunge, putting all that pressure on them.

A Side note on Step-in Harnesses

Based on my experience, it’s almost impossible to find a well-fitting step-in harness, but since they are commonly used for small dogs, it’s much harder to see that they restrict and chafe. I wanted to mention them here to motivate everyone with a small dog to lie on the ground and check how that harness is positioned on their dog when they walk around.

By design, these harnesses are right in the armpit of the dog - the neck-straps of the harness below should have been tightened even more for a good neck fit, but then Mia wouldn’t be able to step without chafing the armpits. It’s not impossible to find one that will fit your dog; it is just much more challenging than with any other design.

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

Summary

As you see, there is much more to finding a good Y-harness than finding one that doesn’t seem too loose/tight around the chest. While it is tough to find an overall well-fitting harness without getting a custom design, it is not impossible, especially if you try to find one with many adjustment points and you spend time re-adjusting it as needed.

You actually don’t have to be as strict with all these requirements as I put it in this article. Many dogs never have an issue with a harness being close to their armpits. If a dog doesn’t pull on a leash, a wider neck strap over the shoulder joint will not be a problem as long as their is room to move their legs freely.

On the other hand, if you have a puller, you want to pay close attention to the chest’s pressure distribution and leave the shoulders free. If you have a dog with sensitive skin, you want to be sure that the chest plate isn’t touching the inside of the front legs and that the armpits are not chafing.

You know your dog, and the goal of this article was to help you decide your priorities and assess if the harness fits as you expected. There is no point in using a harness just because it is a good brand or because someone knowledgeable uses it for their dogs. Choose a harness that fits YOUR dog ;)

If you are interested in reading more, check out the reviews of these harnesses or browse our other articles! :)

How to Choose a Well-Fitting Y-Harness for Your Dog | Dog Gear Review

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