My verdict: the Perfect Fit harness is still one of the best options I’ve used for dogs who are difficult to fit, dogs who need a comfortable Y-shaped harness, and guardians who want a secure, modular setup rather than a simple one-piece harness. It’s particularly useful for reactive dogs and powerful dogs where fit and reliability really matter.
I originally bought Indie’s Perfect Fit when he hit his fear phase and became reactive. I wanted to move from a collar to a harness so I felt more secure handling him when he was frightened, while still giving him comfortable freedom of movement.
I wanted something strong, robust and genuinely capable of handling a powerful German Shepherd. Years later, that long-term use is one of the strongest parts of this Perfect Fit harness review: this wasn’t something I tested for a weekend and put back in a cupboard.
I originally narrowed my options down to the PerfectFit harness and the Ruffwear Front Range. I’ve since tested a lot more equipment, so you can also see where PerfectFit sits in my guide to the best dog harnesses I’ve tried and tested.
Myth busting: Harnesses Make Dogs Pull
This is something I hear a lot. Often followed by “Huskies use harnesses to pull sleds” and whilst this is true It’s also … not really the same thing? The shapes are incredibly different because they’re built for different purposes. That said? They do have the same goal, of evening pressure across your dogs body – but an everyday sort of harness doesn’t do this to the same amount as a mushing, joring or canicross harness.
So, yes, a harness is going contain your dog better than a collar, but it doesn’t mean they’re going to charge you across the park suddenly.
Let me let you in on a secret.
A harness does not teach a dog to pull.
Pulling is a normal behaviour that becomes reinforced when it gets a dog where they want to go. Equipment can change how safely and comfortably you manage that behaviour, but loose-leash walking still needs to be taught. If you need help with that, see How To Stop Your Dog Pulling On A Leash – The Ultimate Tried and Tested 7 Step Solution.
Indie’s Perfect Fit Harness
We’re using the 40mm straps with a Large – Medium – Large configuration (this refers to the back piece, the chest piece and the belly strap respectively). Indie is on kind of the medium setting for the back and tummy – whilst he is on just about as big as it gets for the chest strap.
For clarity: Indie weighs approximately 40kg (90lb), has a 21-inch neck and a 32-inch chest. His original 40mm L-M-L combination matched the German Shepherd recommendation well. PerfectFit now has its own Harness Finder, which is the better place to start than relying on an old static breed chart, particularly for crossbreeds, puppies or dogs with unusual proportions.
How It Works.
PerfectFit is a modular harness system, which is why it can look more complicated than a standard one-piece harness at first. The signature system uses three interchangeable pieces — top, front and girth — while PerfectFit also now offers a two-piece design for some dogs. The current main ranges use 15mm, 20mm and 40mm webbing.
The point of that modularity is fit. A harness that sits beautifully on one dog can rub, twist or restrict another because dogs vary enormously in chest depth, neck shape, proportions and movement. With PerfectFit, you can change an individual section instead of having to size the whole harness around the dog’s least conventional measurement.
Indie’s is the classic three-piece version: a top piece over the shoulders, a Y-shaped front piece and a girth piece behind the front legs. The pieces clip together and have multiple adjustment points, so once it is fitted correctly it becomes much less fiddly than it looks.
I would still take your time with the first fitting. PerfectFit now provides a Harness Finder and fitting guidance, which is much more useful than guessing from a generic small/medium/large label.
Useful Features
Custom sizes
This is the obvious winner here. No matter what shape or size your dog comes in? This harness’ modular design genuinely allows you to construct a fit for your dog, When you consider that our dogs are unique, and that even within a breed we have such enormous variation, it’s good to recognise that with the ability to get a harness that fits all shapes and sizes.
Strength
Indie is a solid dog, sure he’s not the biggest out there, but he definitely is in the larger sizes of woof, and with that? He is immensely strong when he wants to be and understands how to use his size.
This means that I need a harness that can contain, that won’t wiggle, move or flex under him. That doesn’t have points of weakness and won’t easily be opened up by play (as he does still love to play) or by trawling through a bush. This harness? Has never shown weakness, other than a mildly misshapen D-ring where many others would have failed. The construct is light but it is as strong as I could ever imagine.
It’s straps (the nylon ones that dictate the 40mm size) are also pretty much double what’s offered on other harnesses made for dogs of Indie’s size – showing PerfectFit’s dedication to strength and security.
Practicality
I find it hugely practical. It doesn’t matter where we’re heading or what we’re planning on doing? This harness is going to work for Indie. Whether we’re showing off some tricks in a park, I’m doing a demonstration, or we’re heading off through a trail – this is the harness I will go to first in my mind.
Washable
Ahhhh, another branch of practicality, but, this one is really important when you have dogs. Not just for that dog smell, but for the time that your dog goes in that filthy mud puddle and has a roll around, or gone for a dip in the salty, sandy sea.
Throw this in the washing machine (I do suggest doing so inside a pillow case to minimise the clanking) and it comes out as good as new. It dries nicely too.
Note: Do not use fabric softener on your dogs attire or bedding, it actually creates air pollution and can be harmful. So just wash with fragrance-free detergent to ensure your dog is not breathing in anything they shouldn’t – no matter how tempting the smell of your fabric softener may be.
Fleece-lined anywhere it needs to be.
On Indie’s three-piece harness, the main contact areas are fleece lined. The padding is soft, the stitching has held up extremely well for us, and I’ve found it comfortable against his coat and skin even on longer walks.
It Doesn’t Have To Be An Over-The-Head Securing
Whilst I use this to go over Indie’s head? It’s designed in such a way that if your dog fears things going over his or her head, then this one will offer you a flexibility that most harnesses do not. Because of the general flexibility of the clips and the multiple parts, you can clip this together in whatever way your pup feels most comfortable.
Who Needs This?
There is a good variety of people who need a perfect fit harness, but I’ll address the main headliners as I see it!
For Those Learning Not To Pull.
Getting the additional front d-ring attachment creates a two point harness, which is my single favourite way of teaching a dog not to pull. So, if this is something you’re looking at? This harness is the tool I would truly recommend.
For the oddly shaped
But, for those of you who struggle to find fits, because your dog is potentially oddly shaped compared to ‘normal’ then these are perfect. The flexibility of parts and pieces of this modular harness is something that your dog is going to benefit from. So whether it’s a complicated birth defect, or just a quirky cross breed, perfect fit will have something that works for them.
For the Tri-pawed
I love seeing this, but for the dogs who are missing a leg? These harnesses still work. I mean, how wonderful is that?
For the escape artist
A really well-fitted PerfectFit is harder to back out of than many generic small/medium/large harnesses because you can tune the individual sections to the dog rather than compromising across the whole harness.
But I would not call it escape-proof. If you have a dog with a serious history of backing out of harnesses, I still prefer a design with an additional third belly strap, such as the Ruffwear Webmaster or Flagline, and I’d use a backup connection while you are working out what is genuinely secure for that individual dog.
For the Reactive dog parent
I found this harness to be my saviour – in all honesty. This harness during indie’s fear reactivity time, meant I knew I could trust his harness not to give out on me. It was never a question.
And it can be that for you too. Find one that fits properly, and there’s no real ability to wiggle out of it. There’s little chance that you’re going to find yourself with a broken clip due to poor quality. Sure it’s going to cost you a smidge more, but overall? This will last you longer and be cheaper in the long run.
That’s also why it remains one of my top recommendations in Best Equipment For Large Reactive Dogs.
For the filth-hound
If your dog has a nose for dirt, grot, grime and all the other wonderful stuff? Then this one is for you, it washes so easily and dries quickly too. It doesn’t stain or mark, and it won’t look tired anywhere near as quick as others on the market.
Who This Is Not For.
I would skip PerfectFit if you want the simplicity of a one-piece harness you can buy in a single standard size and put on immediately. The modular fitting process is the whole point of this harness, but it does mean more measuring and adjustment at the start.
I also would not make it my first choice for a confirmed escape artist who needs a third belly strap. And aesthetically it is more functional than sleek: if your priority is a minimalist or fashion-led harness, there are prettier options. If your priority is getting a genuinely good fit, though, that trade-off makes sense.
What’s My Favourite Features Of The Perfect Fit Harness?
They have a really wonderful no-fuss policy about pieces of the harness that do not fit as designed. They’ll take them back without hesitation and send you on the part that actually fits – which I adore.
Despite being pretty complicated to start? These products are genuinely built with all dogs in mind.
They are safe, secure, strong and they last so well! They’re machine washable, they don’t have any large panels that get caught, no handles that pose risks to catching on branches or bushes. They’re well build harnesses that (to me) minimise the intrusion on your dog.
After all, I’m sure they’d love to run around with no collar, no harness or otherwise – but our world just doesn’t offer that, does it? So, if we have to keep them contained, this is a fantastic solution with minimal inhibition upon our wonderful woofs.
Is There Room For Improvement With The Perfect Fit Harness.
The biggest drawback for me is still the learning curve. The modular system is brilliant once you understand it, but it is more involved than grabbing a one-piece harness off a shelf. The current Harness Finder and fitting guidance make that process much easier than it used to be.
One other tweak I would make? Would be that I would love a spot for an ID tag. This is something another harness does really well and something I find lacking in the perfect fit. That said, it is a truly minor thing!
Oh! And, whilst the D-rings are incredibly strong – Indie has managed to bend one slightly. That said? In the situation we were in, it held and the leash didn’t. So… I know it’s strong! It’s just potentially something that needs to be increased a smidge for bigger dogs.
Do I Recommend It?
Abso-freaking-lutely. This one is currently my single most favourite pieces of equipment that I’ve ever gotten. This is a truly fantastic piece of kit that I rely upon. It’s gone through rivers, ponds and even in the sea, over rocks and through trees – and (other than some additional floof thanks to Indie!) it looks as good as the day I got it home.
I can’t help but be impressed with it.
It’s also why it made it as my primary harness recommendation for reactive dogs!
Where Can You Get One?
UK: buy directly from PerfectFit, where you can use the Harness Finder and order complete harnesses or replacement individual pieces.
US: Clean Run stocks the modular PerfectFit system, including the separate girth, front and top pieces. That is useful if you need to replace only one section or fine-tune the fit rather than buying a whole new harness.
Prices vary by webbing width, size and configuration, so I would check the current retailer price rather than relying on what I paid years ago. Indie’s original harness cost me about £40, but I’d treat that as historical context rather than a current price guide.
If fit is your priority, particularly for a dog who sits awkwardly between standard harness sizes, PerfectFit remains one of the strongest options I’ve used.
Related Harness Guides
- Best Dog Harnesses: Tried & Tested
- Ruffwear Front Range Harness Review
- How To Stop Your Dog Pulling On A Leash
- Best Equipment For Large Reactive Dogs
Author, Ali Smith
Ali Smith is a professional, qualified, and multi-award winning trainer is the founder of rebarkable. She has always believed animals deserve kindness and champions force free methods. Believing that dog guardians will all choose the kindest options if proper information is provided, she aims to help all dog guardians who need it and make dog training as accessible as possible
Ali lives win Maryland, US with her husband and her three dogs.
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