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

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

£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: Black
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 - Black

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

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 - Black
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 - Black

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: 4.8 / 5 from 691 reviews.

Customer photo review of Anti-Pull TRI-Harness® | Training Dog Harness for All Breeds - Black

The embroidered Anti-Pull Harness is seriously impressive. The overall build quality feels premium, and the custom embroidery is incredibly well done – clean, sharp and looks like it will last for years. The harness itself looks fantastic, but what matters most is that it actually works. The anti-pull design has made walks much more enjoyable and gives better control without compromising comfort for the dog. You can tell a lot of attention has gone into both the design and the quality. Definitely one of the best harnesses I've bought.

Pawel G. 5/5 Verified

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

Customer photo review of Anti-Pull TRI-Harness® | Training Dog Harness for All Breeds - Black

Really impressed! My dog used to pull a lot, but since using the Tri-Harness, she’s so much easier to walk. It fits really well and feels strong and comfortable. Definitely another fantastic purchase from Bully Billows — highly recommended! 🐶

Ludovica B. 5/5 Verified

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

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

Have bought various harness from other retailers only to find the quality poor and not fitting properly. Love our new quality BB tri harness and so do the dogs. Thanks and Merry Staffmous

Lee P. 5/5 Verified

Training Anti Pull TRI-Harness® | M-XL Breeds - Black

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

An excellent harness. Recommended to us by a friend. Our Staffy Walter was a terror for pulling on the lead. He’s only a pup but training him out walking was very challenging. This works a treat. A quality purchase indeed. Great company to deal with. Many thanks!

Paul M. 5/5 Verified

Training Anti Pull TRI-Harness® | M-XL Breeds - Black

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

This harness is incredibly strong and by far the best one I’ve ever used. I have a strong dog, and this harness handles him perfectly without any issues. One of the things I really like is that it doesn’t tug on his neck at all—it distributes the pressure evenly and keeps him comfortable. It also has three different areas to attach the leash, which gives me great control and flexibility depending on the situation. Highly recommended for anyone with a strong or energetic dog!

Devinshiyah J. 5/5 Verified

Training Anti Pull TRI-Harness® | M-XL Breeds - Black

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

It’s quite good he doesn’t pull too much with it which is handy given his size. At first I thought I shud have gotten a size smaller but then realised it was just awkward for my dogs body type. He’s big and long, not so tall given the boerbeol in him. This makes the harness fit a bit awkward for him

Hafsa G. 4/5 Verified

Training Anti Pull TRI-Harness® | M-XL Breeds - Black

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

Best investment I’ve made for him! Really strong and secure, fits perfect and I definitely have control over him now when he decided to pull me to chase the squirrels in the park!

Miss K. 5/5 Verified

Training Anti Pull TRI-Harness® | M-XL Breeds - Black

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

Brilliant harness, gives me a lot of control, buster is a rescue and we’re still working on his walking but this harness has improved it a lot! I’ve repurchased it now for a third time only due to Buster eating them (my fault) and have had to use other harness a few times whilst waiting on my order and they don’t compare to these!

Chloe M. 5/5 Verified

Training Anti Pull TRI-Harness® | M-XL Breeds - Black

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

A solid sturdy harnass that's easy to put on. I especially like the clip in rings as they are a bit bigger than you usually see. It's quite a heavy harnass so initially my MBT pup didn't like it. However, once he turned 6 months old he started loving it. I've paired it with the BB combat leash and double ended one and I'm loving this combo.

Ronnie 5/5

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

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

I am so pleased with this harness. I was worried that it might be too small as i ordered a size c. My rottweiler is 40kg but it fits really well with plenty of room for adjustment. It was really helpful that i could look at photos of other dogs to see how it fitted on them. It does everything it says it does..she stopped pulling and i feel i have much more control and it doesn't rub underneath.

Sarah E. 5/5

TRI-Harness® | Anti-Pull, Adjustable & Durable - Dog Trainers Choice - Black 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!