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The Ruffwear Flagline Dog Harness is lightweight & great for active dogs that love to run, scramble & conquer everyday adventures.  

  • padded back handle & a 'load-dispersing' chest panel for lifts, assists & tri-paw'd dogs
  • front chest & back lead attachment points
  • longer in the body so may be more secure for Houdini dogs!
Blue Dusk
Basalt Grey
Salmon Pink
Sage Green
Alpenglow Pink
Lichen Green

With 6 points of adjustment, the Flagline Harness will fit nearly every dog. It has been popular with hard-to-fit deep chested breeds like Whippets, Lurchers and Greyhounds. It's easy on/off design also make it secure and accessible.  

This dog harness has 3 leash attachment points including:

  • an aluminium V-ring between the shoulders and
  • 2 reinforced webbing loops - one on the chest and one on the back.  These can be used for training as well.

This streamlined harness is also popular with tri-paw'd dogs that need a little help to stand, get up stairs or in/out of the car.

Pair up any Ruffwear leash to your harness order & SAVE 10% on the leash!  Use 'SETSAVE10' at checkout

Check out the matching Flagline Leash!

Sizing the Ruffwear Flagline Harness

To size find the right size, measure around your dog's chest / rib cage at the widest point. 

Right on the border between sizes?  Choose the larger size.

 Size Chest Measure
XXS 33-43cm (13-17")
XS 43-56cm (17-22")
S 56-69cm (22-27")
M 69-81cm (27-32")
L/XL 81-107cm (32-42")


Get 10% of any leash when you buy a harness on Canine Spirit

Video below shows How to Fit & Adjust the Flagline Harness

Key Features

  • Lightweight, easy on/off construction
  • Comfortable lift & assist - Balanced and comfortable lifting with padded handle and load-dispersing chest/belly panel
  • Six points of adjustment for an optimal fit
  • Three leash attachment points: aluminum V-ring on the back and two reinforced webbing loops - one on the chest and one on the back
  • Debris-resistant liner that sheds dirt & fur.
  • Reflective trim for visibility in low-light conditions and light loop for attaching The Beacon™
  • Pair up any Ruffwear leash to your harness order & SAVE 10% on the leash!    Use 'SETSAVE10' at checkout

Video below shows all about the Key Features of the Flagline Harness


  • Shell:  150 denier polyester ripstop (bluesign® approved)
  • Lining:  75 denier polyester lining with heat emboss
  • Nylon webbing straps
  • Buckles:  ITW Nexus Mach side-release buckles
  • Back Leash Attachment Point:  Anodized 6061-T6 aluminum V-ring
  • Front Leash Attachment Point: 87.5% UHMWPE (Ultra-high-molecular-weight polyethylene), 12.5% Nylon

How to clean

  • Hand wash
  • Mild detergent
  • Air dry

Customer Reviews

Based on 86 reviews
Haylee &.n.
The Pawfect Addition To Our Adventures!

The Ruffwear Flagline Dog Harness has be fantastic on our Adventures. Nina the Mini Foxy is very comfortable wearing the harness and fits perfectly. Great for our boating and hiking days with the extra support, all day comfort and light weight durable materials. Couldn't ask for any better harness to recommend! See @ninaterrierprincess for more adventures!

Elaine J.
Ruffwear Flagline Dog Harness

Great product, great quality.
Also great customer support.
Thus is the only harness that I have purchased that my Jack Russell/mini foxie hasn't been able to escape out of.

Ron B.
Exactly as described

Our 12 month old whippet was pull hard on his collar when I walked him but with the harness he is easier to walk. He’s not trying to get away from me now. It doesn’t rub under his leg/body intersection like others did. Easy to put on and take off too. 100% happy

Fantastic harness not to be without

My dog recently had a hind leg amputation and I don’t know how we would have managed without this harness.
Communication with Canine spirit was outstanding when I asked what size harness to purchase. I received a response to my query promptly which was greatly appreciated.
I purchased a medium size flag line harness for my stocky schnoodle who is 19kg.
I’m so impressed with the harness I’m now considering purchasing one for my 14 year old greyhound who needs assistance to get up.
I am also looking at purchasing a floatation harness for my tripod boy.
A wonderful company to do business with

Wriggle worm whippet!

Millar is my 5yo whippet X who can escape anything and everything!
The Flagline is our second Ruffwear harness (the first being the Webmaster) and they're the only pieces of walking gear I'd ever trust on her. The Flagline harness is so comfortable and protects the fine skin on her chest from twigs and bushes when she's off running around.
The harness provides both immense safety for Millar and confidence for me!

Whippet G.
Excellent for Escapees

My dog Whippet Goode is excellent at escaping her lead. This harness doesn’t totally eliminate her ability to squeeze her slim lime body through anything but definitely makes it a much longer and preventable process. As long as you don’t have her in the chest lead and spraying cold water on her alls good. I only bought the second leaf because of her reluctance to go on walks has made her a whoppet instead of a whippet and she has gone from an extra small to a small. The only improvement I would suggest is to make the chest lead a metal connector as well as I think Goode was cross bred with a meet cat and she likes to stand on her rear legs and look at other dogs, so I use the front clasp to either pull her along or drop her to two feet. Highly recommend because of the handle I will stop in the middle of a refuge island and clasp her until we are ready to go.

Love the harness

I am a returned customer. I first bought the front range harness for my puppy and it was a very good harness, still is actually. This flagline one is very light and equipped well on her and has a handle. I love it so much and I think she loves it too. We also bought the matching lead that can be worn around my waist and now we are set for our hiking trips.

Just right!

This is a brilliant harness for my Whippet. Takes a bit to get it fully adjusted to fit but once you’ve got it just right, it’s easy to get on and off without trouble. I can tell my girl is comfortable and it’s lightweight and doesn’t rub under the legs. I feel more secure with her wearing it too on outdoor adventures - no fear of slipping out of this one and some added protection on the underside. The handle is a good feature which will come in handy.

The Sage green is lovely and will be hard to resist getting more in other colours !

Kerry T.
Perfect for my borzois

The harness is a great fit for my borzois. The oldest, Wizard is an escape artist. He has managed to wiggle out of every harness I have tried except for the flagline. As an older dog the chest plate enables us to provide lift support as he gets into and out of the car.
Merlin my young borzoi is a lean, mean, running machine and the harness doesn't impede his movement at all. He also like to do pirouttes on his hind legs when greeting dogs. it is also ideal for restraining him in the car. He has a bad habit of chewing his way out of harnesses, he has not been tempted to do this with the flagline. Fingers crossed
Overall I am very impressed not only with the functionality of the harness,but also the stylish design and colors

Thank you for your prompt delivery


Please do not use my surname

Kim Y.
Fabulous harness

We’re still training our Whippet puppy and I love that we can just pick him up by the handle if needed.