Arc'teryx to MUJI clothing size
The short answer
Arc'teryx XS is MUJI M by the two brands' own charts. 4 of 4 Arc'teryx sizes land on a different label at MUJI.
Both brands publish the body bust each size is cut for, so every row matches a bust, not a letter or a number.
On 4 sizes the charts land two or more sizes from the same label. Brands do not measure the body the same way, so on those rows treat the chart answer and the same label as the two ends of a range.
| Arc'teryx | Arc'teryx builds it for | MUJI Japan sizing, by chart | Same label | MUJI builds it for | MUJI also prints |
|---|---|---|---|---|---|
| XS | bust 33.1 in, waist 26.8 in, hip 36.2 in | M | XS | bust 31.5 to 33.9 in, waist 24.8 to 27.2 in, hip 34.7 to 37 in | not published |
| S | bust 35 in, waist 28.7 in, hip 38.2 in | L | S | bust 33.5 to 35.8 in, waist 26.8 to 29.1 in, hip 36.6 to 39 in | not published |
| M | bust 37 in, waist 30.7 in, hip 40.2 in | XL | M | bust 35.4 to 37.8 in, waist 28.7 to 31.1 in, hip 38.6 to 40.9 in | not published |
| L | bust 40.2 in, waist 33.9 in, hip 43.3 in | XXL | L | bust 37.4 to 39.8 in, waist 30.7 to 33.1 in, hip 40.6 to 42.9 in | not published |
| XL | bust 44.1 in, waist 37.8 in, hip 47.2 in | not made | XL | not published | not published |
| XXL | bust 48 in, waist 41.7 in, hip 51.2 in | not made | XXL | not published | not published |
What wearers say
Charts describe a garment, not a fit. We do not collect fit reports for this category yet, so this table is the two brands' own claims and nothing more.
Sources
- Arc'teryx size guide, read on 2026-09-18.
- MUJI Japan sizing size guide, read on 2026-09-25.