MUJI to Patagonia size
The short answer
MUJI XS is Patagonia XXS by the two brands' own charts. 6 of 6 MUJI sizes land on a different label at Patagonia.
Both brands publish the body chest each size is cut for, so every row matches a chest, not a letter.
On 1 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.
| MUJI Japan sizing | MUJI builds it for | Patagonia, by chart | Same label | Patagonia builds it for | Patagonia also prints |
|---|---|---|---|---|---|
| XS | chest 29.9 to 33.1 in, waist 25.2 to 28.4 in, hip 30.7 to 33.9 in | XXS | XS | chest 33 in, hip 32 in, sleeve 30 in | not published |
| S | chest 31.5 to 34.7 in, waist 26.8 to 29.9 in, hip 32.3 to 35.4 in | XXS | S | chest 33 in, hip 32 in, sleeve 30 in | not published |
| M | chest 34.7 to 37.8 in, waist 29.9 to 33.1 in, hip 35.4 to 38.6 in | S or XS | M | chest 37 in, hip 36 in, sleeve 33 in | not published |
| L | chest 37.8 to 40.9 in, waist 33.1 to 36.2 in, hip 38.6 to 41.7 in | M | L | chest 40 in, hip 39 in, sleeve 34 in | not published |
| XL | chest 40.9 to 44.1 in, waist 36.2 to 39.4 in, hip 41.7 to 44.9 in | L or M | XL | chest 44 in, hip 43 in, sleeve 35 in | not published |
| XXL | chest 44.1 to 47.2 in, waist 39.4 to 42.5 in, hip 44.9 to 48 in | XL or L | XXL | chest 47 in, hip 46 in, sleeve 36 in | 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
- MUJI Japan sizing size guide, read on 2026-09-25.
- Patagonia size guide, read on 2026-09-18.