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Deep Teal
Polar Blue
Polar Blue
Polar Blue
Polar Blue
Polar Blue
Rose Violet
Rose Violet
Rose Violet
Rose Violet
Rose Violet
Deep Teal
Deep Teal
Deep Teal
Deep Teal
Basalt Gray
Basalt Gray
Basalt Gray
Basalt Gray
Basalt Gray
Polar Blue
Polar Blue
Polar Blue
Deep Teal
Deep Teal
Basalt Gray
Basalt Gray
Rose Violet
Rose Violet
New

Front Range® Flex Harness

Light, Flexible, Engineered Knit Harness

Engineered knit harness designed for the ultimate in fit, comfort, and mobility.

Color

Selected: Polar Blue

The Front Range® Flex Harness is built for the ultimate in dog comfort. By utilizing an engineered knit material inspired by performance footwear, this everyday harness conforms to and moves with a dog’s body through every stride for an exceptional, seamless fit. This precision engineered knit construction delivers maximum comfort with minimal bulk and seams, creating a lightweight breathability that reduces rubbing and chafing and allows your dog to focus on the trail ahead. The engineered knit process itself reduces material waste compared to standard cut-and-sew harness construction.

The harness features four points of adjustment, buckles for easy on/off, and two leash attachment points: an aluminum V-ring on the dog's back and reinforced webbing at the dog's chest to redirect dogs that pull on leash. Reflective trim and an integrated light loop for The Beacon™ boost visibility in low-light conditions. The expanded size offerings and soft construction make this harness ideal for companions of all breeds and sizes. The Front Range® Flex Harness takes everything you love about our best-selling Front Range® Harness and delivers it in a lighter, more agile design for high-energy adventures.

Complete the kit for the even greater comfort with the matching Front Range™ Flex Collar and Front Range™ Flex Leash.

Ultimate Comfort

Engineered knit construction is light, flexible, and soft to conform to a dog’s body for ultimate fit and comfort

Adjustable

Four points of adjustment for an optimal fit

Strong Connections

Two leash attachment points: aluminum V-ring on back and reinforced webbing on chest

Additional Features

  • Side-release buckles for easy on/off

  • Engineered knit process reduces material waste compared to standard cut-and-sew harness construction

  • Reflective trim for visibility in low-light conditions

  • Seamlessly integrated light loop for attaching The Beacon™

  • Materials

    • Body: 75% polyester/25% nylon engineered knit
    • Webbing: 100% Polyester (30% recycled)
    • Front Leash Attachment: Nylon webbing in molded TPU
    • Back Leash Attachment: Anodized 6061-T6 aluminum V-ring
    • Buckles: ITW Nexus Mach 1 Side-Release (bluesign® approved)
    • Made in Vietnam
  • Care

    • Secure fasteners
    • Wash in cold water
    • Gentle cycle
    • Mild detergent
    • Air dry

Find the Right Size for Your Dog

Measurement is around the widest part of the rib cage.

Sizing Chart & Technical Specs

Use the sizing chart select the appropriate size for your dog. In between sizes: Choose the larger size.
Product sizing chart table
Girth Size
9 - 13 in (23 - 33 cm) XXXS
13 - 17 in (33 - 43 cm) XXS
17 - 22 in (43 - 56 cm) XS
22 - 27 in (56 - 69 cm) S
27 - 32 in (69 - 81 cm) M
32 - 42 in (81 - 107 cm) L/XL
Find the Right Size for Your Dog chart
Select Size

9-13 in (23-33 cm)

Ratings & Reviews

4.8
Rated 4.8 out of 5 stars
Based on 16 reviews
Total 5 star reviews: 13 Total 4 star reviews: 2 Total 3 star reviews: 1 Total 2 star reviews: 0 Total 1 star reviews: 0
Slide 1 selected
16 reviews
  • Sonia O.
    Verified Buyer
    I recommend this product
    Type of Activity Hiking, Running
    Rated 5 out of 5 stars
    4 minutes ago
    Perfect fit for Gizmo

    Great fit for our Gizmo, we tried several other harnesses and this one fits like a glove! We use it all the time!

  • Ali S.
    Verified Buyer
    I recommend this product
    What is your dog's name? Name
    Type of Activity Hiking
    Rated 5 out of 5 stars
    1 week ago
    An incredible improvement

    LOVE this harness. My 50lb american bully wears the small as he does in all ruffwear harnesses. The standard front range would chafe his sensitive soft belly, but the Flex is not causing that issue! It's still the same great fit that i love of the front range but the material is so light. I was expecting it to be softer, but it is getting softer the more we use it. I also love that it has reflective strips. I hope they come out with more colors! We got the grey, I don't like the light blue one very much. I'd kill for yellow!

  • marissa c.
    Verified Buyer
    I recommend this product
    What is your dog's name? Name
    Type of Activity Hiking, Running
    Rated 5 out of 5 stars
    1 week ago
    So Cute

    This harness is fantastic. It's lightweight, easy to adjust, and looks so cute.

  • Ashley H.
    Verified Buyer
    I recommend this product
    What is your dog's name? Name
    Type of Activity Other, Hiking, Running
    Rated 5 out of 5 stars
    1 week ago
    So Lightweight! Great for tall skinny Aussie!

    After 1.5 years of trying over 10 different harnesses (including Ruffwear Front Range, Flagline, and Hi&Light), and consulting a trainer and veterinarians, this is the only one my dog seems to actually be ok with putting on. He would always cower, runaway away, or go under the table when I would pick up a harness despite enjoying himself out and about on walks etc after he had it on. He doesn’t runaway from this one! He is a 2 yr old standard Australian shepherd, but on the lean and narrow side, only 43 pounds but looks like a 50lb dog from his fluff and height. Our Dynamic Dog UK certified trainer helped us figure out that a majority of harnesses were too wide for his narrow chest or if they were narrow enough for his chest they were too small otherwise restricting his shoulders and/or having the second strap too close to his arm pits. This Flex harness in size Medium fixes those issues! He has full range of motion, nothing heavy or restrictive on his shoulders/back, and because it is knit, the chest part is just narrow enough and flexible enough that it sits perfectly between his front legs without putting and pressure or rubbing them. And the colors are beautiful- I got the teal in small and the blue in medium, both are gorgeous, but of course returned the small dye to its fit. For him, the medium fits well on the smallest fit settings, I do adjust the neck just to put it on and off more easily. The only way this harness could be better is if they made a…

  • Tamer M.
    Verified Buyer
    I recommend this product
    What is your dog's name? Name
    Type of Activity Running
    Rated 5 out of 5 stars
    2 weeks ago
    Love it

    Love it and works really well