FurPick · brand sizing
Ruffwear harness sizing
Ruffwear’s Harness (girth sizing) covers chest girths from 23cm to 107cm across 7 sizes. Starts smaller than most, so it reaches dogs other brands cannot fit. It also stops lower than most, so the largest dogs fall off the end of its range.
The full chart
| Size | Chest girth |
|---|---|
| XXXS | 23–33 cm |
| XXS | 33–43 cm |
| XS | 43–56 cm |
| S | 56–69 cm |
| M | 69–81 cm |
| L | 81–91 cm |
| XL | 91–107 cm |
Taken from Ruffwear’s own chart, checked 2026-08-19.
What Ruffwear calls the same dog other brands would
Letter sizes do not travel between brands. A dog measuring 65cm around the chest takes Ruffwear S, and the same dog is:
If your dog measures between two sizes
Ruffwear’s ranges overlap on purpose, so a measurement landing in two of them is normal rather than a mistake. What decides it is where inside each range you sit: near the bottom the straps run near their tightest, near the top there is little adjustment left and a growing dog will outgrow it. The size finder shows that position for every brand at once.