Ruffwear Web Master Harness size chart (in & cm)
Ruffwear publishes 5 sizes for the Web Master Harness, sized by chest girth (widest part of rib cage). The chart runs from 13 to 42 in33 to 107 cm.
Source: Ruffwear official size chart, checked Nov 4, 2026.
The full Ruffwear Web Master Harness chart
Exactly as Ruffwear publishes it. Use the in / cm toggle at the top of the page.
| Size | Chest girth |
|---|---|
| XXS | 13–17 in33–43 cm |
| XS | 17–22 in43–56 cm |
| S | 22–27 in56–69 cm |
| M | 27–32 in69–81 cm |
| L/XL | 32–42 in81–107 cm |
- Ruffwear prints in + cm (both printed).
- Ruffwear prints both units; both are shown exactly as published.
Note: Maker's fit tip: In between sizes? Choose the smaller size.
Note: Product page chart lists 5 sizes (L and XL combined as 'L/XL'). Ruffwear's general size guide (https://ruffwear.com/pages/size-guide) splits L 32-36 in and XL 36-42 in and adds XXXS 9-13 in for Hi & Light only.
If your dog is between two sizes
Ruffwear publishes advice for this, so use theirs rather than a rule of thumb:
“In between sizes? Choose the smaller size.”
Source: Ruffwear, Web Master Harness, checked Nov 4, 2026.
This site treats a measurement within 1 in of the edge of a size, or inside two sizes at once, as between sizes, and shows both. Work it out with the harness calculator, or read how to measure your dog.
Popular breeds on the Ruffwear Web Master Harness chart
10 of the most popular breeds that have a published chest girth, mapped onto this chart. Only 57 of 127 breed records have a girth at all, so this is a sample, not a ranking. A breed range is a range: two dogs of the same breed can land in different sizes, so measure your dog.
| Breed | Typical chest girth | Size on this chart | How it was worked out |
|---|---|---|---|
| French Bulldog | 20–26 in50.8–66 cm | XS or S | by chest girth |
| Labrador Retriever | 28–36 in71.1–91.4 cm | M or L/XL | by chest girth |
| Golden Retriever | 28–34 in71.1–86.4 cm | M or L/XL | by chest girth |
| German Shepherd Dog | 30–36 in76.2–91.4 cm | M or L/XL | by chest girth |
| Dachshund (Standard) | 16–24 in40.6–61 cm | XXS to S (3 sizes)Measure your dog’s chest to pick one. | by chest girth |
| Poodle (Standard) | 24–30 in61–76.2 cm | S or M | by chest girth |
| Beagle | 20–26 in50.8–66 cm | XS or S | by chest girth |
| Rottweiler | 32–40 in81.3–101.6 cm | M or L/XL | by chest girth |
| Cavalier King Charles Spaniel | 18–22 in45.7–55.9 cm | XS or S | by chest girth |
| Yorkshire Terrier | 12–15 in30.5–38.1 cm | XXS | by chest girth |
Where a breed’s published girth reaches across three or more sizes, the first and last are shown with the count. This site will not pick one of them for you.
- Breed heights and weights: AKC breed pages, checked Nov 4, 2026.
- Girth: Hund & Shore, "Dog Collar & Harness Size Chart by Breed"
How to measure for this harness
Ruffwear sizes this harness by chest girth (widest part of rib cage).
Run a soft tape around the widest part of the rib cage, just behind the front legs, and keep it snug but not tight. Two fingers should slide under it. Measure twice: a tape that has slipped an inch is the single most common reason a size is wrong.
A number off this chart is where to start, not a fitting. Measure your dog and check Ruffwear’s own current chart before you buy.
Ruffwear Web Master Harness
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Sizes here come from the maker’s own chart, not from any retailer.
Nearest harness charts
Charts that cover a similar range, if this one is too small or too large for your dog.
- Ruffwear Flagline Harness
5 sizes · 13–42 in
- Ruffwear Front Range Harness
5 sizes · 13–42 in
- Chai's Choice Outdoor Adventure Dog Harness (3M reflective)
5 sizes · 13–42 in
- PetSafe Easy Walk 3 in 1 Harness
4 sizes · 13–42.5 in
Back to every harness chart · Dog harness size chart