PetSafe 3 in 1 harness sizing
PetSafe 3 in 1’s Easy Walk 3 in 1 Harness chart lists chest girths from 33cm to 108cm across 4 sizes. Uses wide size bands, so a single size covers a lot of dogs and adjustment matters more.
The full chart
| Size | Chest girth | Weight guide | Buy |
|---|---|---|---|
| X-Small | 33–48.3 cm | 4.5–11.3 kg | Shop X-Small → |
| Small | 48.3–61 cm | 11.3–20.4 kg | Shop Small → |
| Medium | 61–86.4 cm | 20.4–34 kg | Shop Medium → |
| Large | 74.9–108 cm | 34–59 kg | Shop Large → |
Taken from PetSafe 3 in 1’s own chart, checked 2026-10-04.
This chart is the Easy Walk 3 in 1 Harness. PetSafe make other harnesses, and a chart published for one is not automatically right for another — check the box before ordering a different model.
Other PetSafe harnesses with their own chart: PetSafe (Easy Walk Harness)
What PetSafe 3 in 1 calls the same dog other brands would
Letter sizes do not travel between brands. For a chest measurement of 71cm, the finder recommends PetSafe 3 in 1 Medium using chest girth alone. The same measurement gives these chart results:
- Julius-K9 — 1; also covered by 0, 2
- Ruffwear — M
- PetSafe — Medium; also covered by Medium/Large, Large
- Kurgo — Large; also covered by Medium, X-Large
- Blue-9 — M; also covered by M/L
- Rabbitgoo — XL; also covered by L
- Puppia — XL; also covered by L
- Dog Friendly Co — M; also covered by L
- PawSafe — M; also covered by L, S
- Wonder Walker — Medium; also covered by Large, Small
- Top Paw — gap in the published chart. 71cm falls in a gap in Top Paw's chart, between Medium (up to 68.6cm) and Large (from 71.1cm). Re-measure first — a reading this close is often a little off. If it holds, the Medium would be at its loosest and the Large at its tightest.
These recommendations use chest girth alone. The size finder also considers published weight guidance when you supply weight. If you already know your dog’s PetSafe 3 in 1 size and want it at every other brand, convert it directly — the tool opens on PetSafe 3 in 1 and reads out every size that overlaps.
Where the size ranges meet
PetSafe 3 in 1 has overlapping size bands. For example, Medium and Large both cover 74.9–86.4cm. The finder recommends the most central match by chest girth and keeps the other covering sizes visible; published weight guidance can help choose when weight is supplied.
Some size pairs also share a single endpoint: X-Small / Small at 48.3cm; Small / Medium at 61cm. At each of these exact measurements, both named sizes cover the chest.
Near the bottom of a size’s range, the straps run close to their tightest; near the top there is little adjustment left. The size finder shows that position and every covering alternative.