• featured image of Anti-Pull TRI-Harness® | Training Dog Harness for All Breeds - Metal Grey
  • featured image of Anti-Pull TRI-Harness® | Training Dog Harness for All Breeds - Metal Grey
  • featured image of Anti-Pull TRI-Harness® | Training Dog Harness for All Breeds - Metal Grey
  • featured image of Anti-Pull TRI-Harness® | Training Dog Harness for All Breeds - Metal Grey
  • featured image of Anti-Pull TRI-Harness® | Training Dog Harness for All Breeds - Metal Grey
  • featured image of Anti-Pull TRI-Harness® | Training Dog Harness for All Breeds - Metal Grey
  • featured image of Anti-Pull TRI-Harness® | Training Dog Harness for All Breeds - Metal Grey
  • featured image of Anti-Pull TRI-Harness® | Training Dog Harness for All Breeds - Metal Grey
  • featured image of Anti-Pull TRI-Harness® | Training Dog Harness for All Breeds - Metal Grey
  • featured image of Anti-Pull TRI-Harness® | Training Dog Harness for All Breeds - Metal Grey
  • featured image of Anti-Pull TRI-Harness® | Training Dog Harness for All Breeds - Metal Grey
  • featured image of Anti-Pull TRI-Harness® | Training Dog Harness for All Breeds - Metal Grey
1 Million products sold, happy dogs worldwide

Anti-Pull TRI-Harness® | Training Dog Harness for All Breeds - Metal Grey

£34.99
The TRI-Harness® is designed to give dogs a safer, more comfortable walking experience without pulling, rubbing, or restricting movement. After... View Full Details
  • Anti‑Pull Control for All Breeds
  • Full‑Body Comfort & Freedom
  • Secure, Adjustable, Everyday‑Ready

Product Options

Colours: Grey
Sale
Size: Select Size

Not sure? Try our Size Guide for the perfect fit

Stand out from the pack

Personalise your product (+£4.99)

Make it Theirs

Select Font:

Select Colour:

Select Icon:

Guidance & examples

Size & fit

The stitching area on our XXS, XS and Small sizes is limited; we advise having a maximum of 5 characters and not adding an icon.

Examples from the pack

Red harness with yellow text in hobo font
Red harness with yellow text in hobo font
Tan harness with blue text in BullyBillows font
Tan harness with blue text in BullyBillows font

About personalisation

Important - Creating your unique look with our bespoke stitching/engraving quality could take us up to 7-10 working days to complete, it's well worth the wait though.

When customising the Combat Range, the adjuster may cover part of the text. The best way to help avoid this is to choose the smallest size which will fit your dog; the adjuster will then be located at the end of the collar away from the name.

Preview images are for illustration only, text and Icons will always be centered neatly on the product. Colours and fonts may change very slightly during production.

We offer personalisation option on almost all of our Collars, Leads and Harnesses. What are the key benefits of adding personalisation to your BullyBillows gear?

1. They're unique to you and your dog.

2. If you have multiple dogs, adding your dogs name can help to distinguish which collar is for which dog.

3. Adding a phone number and Social handle in the unfortunate event of your dog getting lost, this is a very powerful way to ensure your dog can be tracked back to you.

4. If you have a working dog, nervous dog or one who just loves to jump, you can enter names such as POLICE DOG, WARNING, DO NOT PET, NERVOUS etc.

Your Dog Needs This

1.4m Swivel Combat Lead | Anti-Tangle & Secure Clip - Metal Grey

£27.99
1.4m Swivel Combat Lead | Anti-Tangle & Secure Clip - Metal Grey

The chest measurement of your dog, or the girth, is the first measurement you’ll need to take. This can be taken by placing the measuring tape around the widest part of your dog’s torso, usually just behind the front legs.

The next measurement should be taken around the lower part of your dog’s neck, simply measure the widest part at the base of the neck as this is where the harness is going to sit. This size chart is based on min-max measurements.

Size
Neck Girth
Chest Girth
Chest Length
XXS (MINI A)35cm-55cm33cm-49cm21cm-32cm
XS (MINI B)40cm-60cm40cm-58cm22cm-39cm
A43cm-64cm50cm-66cm23cm-32cm
B60cm-71cm55cm-80cm27cm-39cm
C65cm-91cm65cm-90cm28cm-40cm
D69cm-108cm70cm-108cm29cm-44cm
Size chart for Anti-Pull TRI-Harness® | Training Dog Harness for All Breeds - Metal Grey
kg

Measure around the base of the neck where a collar would sit.

cm

Measure around the widest part of the chest, just behind the front legs.

cm

Measure from the base of the neck (where a collar sits) to just before the last rib.

cm
Anti-Pull TRI-Harness® | Training Dog Harness for All Breeds - Metal Grey

Product description

The TRI-Harness® is designed to give dogs a safer, more comfortable walking experience without pulling, rubbing, or restricting movement. After listening to thousands of owners, we’ve combined our Mini and Standard versions into one complete size range, making it easier than ever to choose the perfect fit for your dog.

Built with a non-restrictive Y-shape, soft neoprene lining, and three strategically placed attachment points, this harness supports natural movement while giving owners full control. Whether you’re training a puppy, managing a reactive dog, or simply want a more comfortable daily harness, the TRI-Harness® delivers reliable performance for every breed.

Optimized for Every Body Type

  • Mini Series (Mini/A – Mini/B): Uses a slimmer 2.5 cm webbing, perfectly weighted for toy and small breeds.
  • Standard Series (Size A – Size D): Uses a robust 4 cm webbing, providing the necessary strength and surface area for medium to extra-large dogs

Key Features

  • Three Attachment Points: Versatile options for training, control, and everyday walking
  • Non-Restrictive Y-Frame: Ergonomic design that allows for full shoulder and joint movement.
  • Soft Neoprene Lining: Premium comfort that reduces rubbing and protects sensitive skin
  • Anti-Pull Front D-Ring: The ultimate tool for training and correcting pulling behaviour.
  • Durable Webbing: Size-specific width (2.5 cm for Mini / 4 cm for Standard) for maximum safety.
  • Secure Buckle System: High-strength fasteners for easy on/off application.

Benefits

  • Improves Lead Manners: Gently reduces pulling without causing pain.
  • Protects the Neck: Prevents dangerous pressure on the trachea and throat.
  • All-Day Comfort: Lightweight, breathable construction suitable for long hikes or city strolls.
  • Universal Fit: From Chihuahuas to Great Danes—one design, perfected for all sizes

Ideal For

  • Small Breeds & Puppies: Mini/A and Mini/B (formerly the "MINI TRI-Harness").
  • Medium to Extra-Large Breeds: Size A, B, C, and D (formerly the "Standard TRI-Harness").
  • Strong or Reactive Pullers: Provides the control needed for safer management.

Size & Fit Notes

  • Mini Series: 2.5 cm webbing width.
  • Standard Series: 4 cm webbing width.
  • Consistency: The design and functionality are identical across the range; only the webbing width is adjusted to suit the dog's power and scale.
  • Measurements: Please refer to our Universal Size Guide image for Neck, Chest Girth, and Chest Length measurements

Trademark & Copyrighted Design Rights Number: 6189802

Hear it directly from our ambassadors

@gsdbear

@gsdbear

Once you’ve tried BullyBillows, you’ll never go anywhere else. The quality and range of their products is unmatched, and the team are just fantastic. We’ve been with them since 2020 and we’ve never looked back!

@meko_xlbully

@meko_xlbully

BullyBillows combines strength, comfort, and style perfectly for dogs like Meko. We absolutely adore BullyBillows.

@thepuggysmalls

@thepuggysmalls

We have so many goodies from BullyBillows, from harnesses, leads, dog chews and beds, they tick all the boxes to keep my precious pugs happy, cosy, safe and oh so stylish!

@swedishbulldogfamily

@swedishbulldogfamily

Finding products that our bulldogs genuinely feel comfortable wearing changed everything for us, and that’s exactly what BullyBillows gave us.

Customer Reviews

Overall rating: 4.9 / 5 from 288 reviews.

Customer photo review of Training Anti Pull TRI-Harness® | M-XL Breeds - Metal Grey

The pictures of my Norman in the harness don’t do it the justice it deserves (he’s a very hard boy to keep still😆) but believe me when I say this harness has revolutionised our walks! From the packaging it came in to the craftsmanship on the product itself and the communication from the company is a 10/10!! Couldn’t recommend it more this is a brand we will be sticking with✨

Sophie T. 5/5 Verified

Training Anti Pull TRI-Harness® | M-XL Breeds - Metal Grey

Customer photo review of Training Anti Pull TRI-Harness® | M-XL Breeds - Metal Grey

from the minute this arrived to now my dog has stop pulling completely, walking her is so much nicer and calmer highly recommended and amazing quality. fantastic support from the team and excellent delivery

Amy H. 5/5 Verified

Training Anti Pull TRI-Harness® | M-XL Breeds - Metal Grey

Customer photo review of Training Anti Pull TRI-Harness® | M-XL Breeds - Metal Grey

My elderly dog has arthritis and his perfect fit harness was great, except it put all the stress on his front legs when I needed to correct him. With the new BB harness it puts the main part on his stomach area, I've bought two as they are so good. Pictured here wearing his red one but we also have it in grey.

Tracey W. 5/5 Verified

Training Anti Pull TRI-Harness® | M-XL Breeds - Metal Grey

Customer photo review of Training Anti Pull TRI-Harness® | M-XL Breeds - Metal Grey

Purchased a new bully billows harness for my French Bulldog , who pulls a lot of. I found this harness the best I have purchased so far Good quality and strong excellent value for money will definately buy again . Thank you .

Michelle J. 5/5 Verified

Training Anti Pull TRI-Harness® | M-XL Breeds - Metal Grey

Customer photo review of Training Anti Pull TRI-Harness® | M-XL Breeds - Metal Grey

My dog has always pulled no matter what collar or harness we’ve tried. this is the first harness which has actually worked and limited his pulling so fingers crossed that continues and i will be buying more!!

Abbie H. 5/5 Verified

Training Anti Pull TRI-Harness® | M-XL Breeds - Metal Grey

Customer photo review of Training Anti Pull TRI-Harness® | M-XL Breeds - Metal Grey

The harness is lovely and clearly well made. I went for size A in the measurements and it fits Vinnie at the moment at 9 months. The neck fitting seems to have alot of adjustment. However the waist fitting doesn't seem to have so much. Not sure if this will still fit him as he fills out. So glad that I got this harness in the sale too be honest. It's definitely nice and secure and he can't back out of it which had been a problem. He looks lovely in it as well 😍

Sarah M. 4/5 Verified

Training Anti Pull TRI-Harness® | M-XL Breeds - Metal Grey

Customer photo review of Training Anti Pull TRI-Harness® | M-XL Breeds - Metal Grey

Love this harness, my boy has struggled previously with other harnesses rubbing him but not anymore, this one fits him perfectly and he doesn't mind wearing it , it's absolutely fantastic quality and looks great with the matching collar and lead

Lisa C. 5/5

Training Anti Pull TRI-Harness® | M-XL Breeds - Metal Grey

Customer photo review of Training Anti Pull TRI-Harness® | M-XL Breeds - Metal Grey

Amazing quality as always. We already have the combat collar but needed an update to Flynns harness. Flynn is a strong boy and using the anti pull front rings on road walks, works really well for us.

Donna E. 5/5 Verified

Training Anti Pull TRI-Harness® | M-XL Breeds - Metal Grey

Customer photo review of Training Anti Pull TRI-Harness® | M-XL Breeds - Metal Grey

Lovely harness and well made. I was walking with a halti to help with his pulling but the last two walks with this harness, I haven’t had to use the halti. I now have the matching colour and lead too. Very happy

Jade M. 5/5 Verified

Training Anti Pull TRI-Harness® | M-XL Breeds - Metal Grey

Customer video review of Training No Pull TRI-Harness® | M-XL Breeds - Metal Grey

I love this harness.It is very durable and supports my dog great. I like very much, that this harness has three rings two on the back and one in the front.I often take my dog on a dubble leash, for more control for this, it is very comfortable to have more than one ring

Jennifer S. 5/5

Training No Pull TRI-Harness® | M-XL Breeds - Metal Grey

Customer photo review of TRI-Harness® | Anti-Pull, Adjustable & Durable - Dog Trainers Choice - Metal Grey v2.0

This is the best quality harness for the comfort of my staffy. Size B fits him perfectly and doesn’t rub his skin which alternatives have done in the past. It gives me good control of him and stops him from pulling on walks. It’s also great for car travel along with the seat belt safety strap. I absolutely recommend it and will continue to purchase it in different colours.

Tomasz B. 5/5

TRI-Harness® | Anti-Pull, Adjustable & Durable - Dog Trainers Choice - Metal Grey v2.0

Customer photo review of TRI-Harness® | Anti-Pull, Adjustable & Durable - Dog Trainers Choice - Metal Grey v2.0

Size B fits my American Bully puppy perfect with lots of room for him to grow into. Amazing quality and he seems to feel comfortable in it. His previous harness was a Juluis k9 but sadly it rubbed and left under his arms a right state. I bought him the matching lead too for this harness which is also top quality. Will be buying a bubblegum pink one in time for my other dog Lola as she looked very envies when Harley had his on. Can't have her missing out! Thank you BullyBillows

Sarah Q. 5/5

TRI-Harness® | Anti-Pull, Adjustable & Durable - Dog Trainers Choice - Metal Grey v2.0

Customer photo review of TRI-Harness® | Anti-Pull, Adjustable & Durable - Dog Trainers Choice - Metal Grey v2.0

My dog pulled like a train with every other harness or collar tried before. As soon as I used this tri harness it was like magic! Combining the training lead clipped as suggested to the front clip and one on the back, our walks are now enjoyable and don't feel like she'll pull my arm off. The tri harness is 100% quality and I believe my dog finds it comfortable. She can run without constriction. It washes in the machine without any worries.

Esther B. 5/5 Verified

TRI-Harness® | Anti-Pull, Adjustable & Durable - Dog Trainers Choice - Metal Grey v2.0

Customer photo review of TRI-Harness® | Anti-Pull, Adjustable & Durable - Dog Trainers Choice - Metal Grey v2.0

Harness is brilliant. Helped stop my 7m old Cane Corso from pulling as much as he did, felt like I had more control when combined with the double ended lead. Adjustable size and fits at the size he is now and when I inspected the product before adjusting to his current size it looks as though it will fit when he is full grown too which I am very happy with. Good quality, lovely colour and his name is sewn in on the side and it's not just a sticker which is even better than what I expected to say personalisation was free. Would definitely recommend and buy again. Thank you Bully Billows team.

Shannon K. 4/5 Verified

TRI-Harness® | Anti-Pull, Adjustable & Durable - Dog Trainers Choice - Metal Grey v2.0

Customer photo review of TRI-Harness® | Anti-Pull, Adjustable & Durable - Dog Trainers Choice - Metal Grey v2.0

I was unsure of which harness and lead combo to purchase so emailed for advice. Customer service was very quick to respond and gave fantastic advice. They even checked I had the correct measurements (which I hadn't initally), which was very helpful. I purchased the tri harness and training lead. It arrived v quickly in very stylish packaging. I was previously using a K9 harness and my dog had developed spots from it rubbing. Since changing, the spots have all gone and our walks have been transformed. My dog is strong and pulls a lot. The lead is super sturdy and the harness v comfortable. I love the fact the harness and lead have a number of rings you can use to suit you. I feel I have much more control. I could not be happier with the products and customer service. I cannot thank you enough. 5 stars.

Rebecca E. 5/5 Verified

TRI-Harness® | Anti-Pull, Adjustable & Durable - Dog Trainers Choice - Metal Grey v2.0

Customer photo review of TRI-Harness® | Anti-Pull, Adjustable & Durable - Dog Trainers Choice - Metal Grey v2.0

I have tried so many harnesses and they have rubbed my poor baby red raw. This harness was my last resort. The front clip works to stop her pulling as much but since wearing this she hasn't rubbed at all. She just needs to fill put a little to fill the front part. I am very happy with this harness and glad I paid the extra to make my baby happy and not sore anymore. 😍

Nicci B. 5/5 Verified

TRI-Harness® | Anti-Pull, Adjustable & Durable - Dog Trainers Choice - Metal Grey v2.0

Customer photo review of TRI-Harness® | Anti-Pull, Adjustable & Durable - Dog Trainers Choice - Metal Grey v2.0

Luna, my gorgeous 10 month old American Bulldog is an absolute dream to walk now. The double D ring on the back has given me more control when using a double clip lead and the positioning of the harness is also great, as previous ones had rubbed and given her sores under her armpits. Size guide on the website is spot on.

Emma W. 5/5 Verified

TRI-Harness® | Anti-Pull, Adjustable & Durable - Dog Trainers Choice - Metal Grey v2.0

FAQs

How to put on a dog harness

Start by unbuckling the harness and having your dog sit or stand still next to you. Slip the harness over their head and pull the straps underneath their tummy. Or, if you have a step-in harness, place it on the floor and help your dog place their feet correctly, before pulling it up over their back. Fasten it up securely, making sure it’s not too tight or too loose, and adjust accordingly.

What is the best dog harness?

The best dog harness really depends on the breed, size, and activity level of your dog. The comfortable Hurricane Harness features a useful handle and is super lightweight, while the Premium Harness is a great all-rounder for any dog. The traditional slip-on harnesses offer quick and easy fitting, while step-in harnesses might be better for dogs that dislike harnesses going over their head. And if your dog pulls, the TRI-Harness helps with training to prevent excessive pulling on the lead. You can read more in our Dog Harness Buying Guide. All of our harnesses are lined with Neoprene which is soft and helps avoid harsh burns unlike other brands.

How to measure a harness for a dog

To measure your dog for a harness, grab a measuring tape and wrap it around the widest part of their ribcage, then measure their neck at the base (where the collar sits and not in the middle of the neck). Make sure that the measurements aren’t too tight, but are secure enough that the harness won’t slip off if your dog pulls. 

If you have the harness already, try it on your dog and make sure you can fit two fingers between the harness and their body. Finally, monitor your dog’s behaviour - if they’re showing signs of discomfort or walking awkwardly, it may need adjusting more to suit your dog.

How to use a dog harness correctly

To ensure you’re using your dog harness correctly, you need to make sure it’s properly fitted. This means that it’s tight enough to prevent the harness moving, but loose enough to allow your pooch to move comfortably. Attach your lead to your chosen D-ring, whether that’s on their back or their chest, and get ready for your adventure!