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Dog Size Chart
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Blue-9 Balance Harness size chart (in & cm)

Blue-9 publishes 5 sizes for the Balance Harness, sized by ribcage girth (about 2 in behind the elbow). The chart runs from 13.5 to 43.5 in34 to 110.5 cm.

Source: Blue-9 official size chart, checked Nov 4, 2026. Read from the maker's own chart image on that page.

The full Blue-9 Balance Harness chart

Exactly as Blue-9 publishes it. Use the in / cm toggle at the top of the page.

Blue-9 Balance Harness published size chart
SizeChest girthStrap width
XS13.5–18 in34–45.5 cm5/8" (1.5 cm)
S17.5–25.5 in44.5–64.5 cm5/8" (1.5 cm)
M21–32 in53–81 cm3/4" (1.9 cm)
M/L24–35.5 in61–90 cm1" (2.5 cm)
L29–43.5 in73.5–110.5 cm1" (2.5 cm)

Note: Read from the maker's chart image linked on the product page. The image's inch and metric tables are not exact conversions of each other; both are kept as printed.

If your dog is between two sizes

Blue-9 publishes no between-sizes guidance for the Balance Harness, so this site will not invent one. Between sizes. Check the maker’s chart before you buy.

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 Blue-9 Balance 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.

Popular breeds and the Blue-9 Balance Harness size their published girth falls in
BreedTypical chest girthSize on this chartHow it was worked out
French Bulldog20–26 in50.8–66 cmS to M/L (3 sizes)Measure your dog’s chest to pick one.by chest girth
Labrador Retriever28–36 in71.1–91.4 cmM to L (3 sizes)Measure your dog’s chest to pick one.by chest girth
Golden Retriever28–34 in71.1–86.4 cmM to L (3 sizes)Measure your dog’s chest to pick one.by chest girth
German Shepherd Dog30–36 in76.2–91.4 cmM to L (3 sizes)Measure your dog’s chest to pick one.by chest girth
Dachshund (Standard)16–24 in40.6–61 cmXS to M/L (4 sizes)Measure your dog’s chest to pick one.by chest girth
Poodle (Standard)24–30 in61–76.2 cmS to L (4 sizes)Measure your dog’s chest to pick one.by chest girth
Beagle20–26 in50.8–66 cmS to M/L (3 sizes)Measure your dog’s chest to pick one.by chest girth
Rottweiler32–40 in81.3–101.6 cmM to L (3 sizes)Measure your dog’s chest to pick one.by chest girth
Cavalier King Charles Spaniel18–22 in45.7–55.9 cmXS to M (3 sizes)Measure your dog’s chest to pick one.by chest girth
Yorkshire Terrier12–15 in30.5–38.1 cmXSby 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.

How to measure for this harness

Blue-9 sizes this harness by ribcage girth (about 2 in behind the elbow).

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 Blue-9’s own current chart before you buy.

Full guide: how to measure your dog

Blue-9 Balance 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.

Back to every harness chart · Dog harness size chart