Flagline Dog Harness with Handle - lightweight, adventure dog harness


Meltwater Teal
Red Rock
Granite Grey

The Ruffwear Flagline Harness is lightweight harness that is great for active dogs that love to run, scramble and conquer everyday adventures.   It has a padded back handle and also a 'load-dispaering' chest/belly panel that allows you to easily and comfortably assist your dog over obstacles.

And it has 3 points where leashes can be attached including a aluminium V-ring between the shoulders and two reinforced webbing loops - one on the chest and one on the back.  These can be used for training as well.

With 6 points of adjustability,  the Flagline dog harness will fit nearly every dog.  It's easy on/off design also make the Flagline secure and accessible.


To size the Flagline Harness measure around your dog's chest.  In 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")


How to Measure Your Dog's Girth

Here is a video that shows how to fit and adjust the FlagLine Harness

Key Features

  • Lightweight, easy on/off construction
  • 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 and two reinforced webbing loops
  • Debris-resistant liner
  • Reflective trim for visibility in low-light conditions and light loop for attaching The Beacon™


  • 420 denier nylon ripstop
  • 75 denier polyester lining with heat emboss
  • Nylon webbing
  • ITW Nexus Mach buckles
  • Anodized 6061-T6 aluminum V-ring
  • Made in Vietnam

How to clean

  • Hand wash
  • Mild detergent
  • Air dry

Customer Reviews

Based on 9 reviews

Flagline Dog Harness with Handle - lightweight, adventure dog harness

Gold standard for Whippets!

Love this harness! It fits my whippet like it’s tailor made. I purchased a S size for my 17kg whippet. The adjustable straps stay put and don’t slide loose with time. It’s very light, flexible and not bulky so my boy has full movement to run in it, no rubbing spots in armpits, and not too hot to wear in summer. Using the front chest attachment my boy no longer pulls on the lead - which is like magic - I would have paid double for this benefit alone. Highly recommend for whippets with all those glorious curves to fit right!

Flagline Harness perfect for my whippet

This is the best harness on the market in the opinions of Vito and me. It’s easy to fit and Vito is comfortable in it. I love that there are 6 points of adjustment and 3 lead attachement options. This harness is expensive but so worth it. Also canine spirit are awesome to deal with. No fuss and fast delivery. 5 stars

Back for More

Having trialled a Flatline XXS on a Whippet puppy, i am now back for the XS at 4mths old. He's still growing.... and yet to escape!

Fantastic product!

We needed a whippet proof lightweight harness and the flagline ruffwear harness has ticked all the boxes. Thank you!

XL Flagline harness

I have been looking for so long to find a harness to fit my Irish Wolfhound properly. Struggling with both PolyArthritis and Osteosarcoma, Marli needs a harness to offer support when we are out and about on our adventures. Having such a deep chest, other harness would either rub under her arms or put pressure on her neck when she put her head down.
The Flagline fits like a glove!! Lightweight yet strong and durable it is definitely the best purchase i have ever made! Great customer service from CanineSpirit also!
IG - marli_the_wolfy


Extremely happy with this harness. It fits my greyhound very well and doesn’t cause any friction issues with front underarms

Flagline Dog harness

My French Bulldog pup had to have her front left leg amputated. I did some research about an appropriate harness prior to her surgery. This harness is great. I’m not worried about her slipping out of it, and it unclips from either side enabling me to put it over her head without having to lift her remaining front leg. Very happy with it.


I bought these for my whippets due to the extra security they offer - I can't fault them at all and the quality is fantastic.
I was hoping the front clip option would help our walking behaviour but not to be.

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★ Our Reviews

Customer Love

281 reviews

Flagline Dog Harness with Handle - lightweight, adventure dog harness

Thank you

My dog had an fibrocartilaginous embolism or FCE just before Christmas and needed a harness asap that would be useful to his rehabilitation. Canine Spirit got his harness to me so quickly considering the time of the year with covid. Thank you

Saved the marriage!

My wife was always unhappy with the treat pouch she had been using (& our dog wasn't all that impressed either) so a hunting I did go...found your Treat Trader, ordered on line (we live in Australia) & all is well in love, treats & marriage!

Great product!

My dog came unclipped and ran off a few times using the normal lead. No more! The lockable carabiner gives me so much peace of mind. Thanks

excellent product

quality build, functional utility, highly recommended