Patagonia to Marks & Spencer size
The short answer
Patagonia XXS is Marks & Spencer XS by the two brands' own charts. 5 of 7 Patagonia sizes land on a different label at Marks & Spencer.
Both brands publish the body chest each size is cut for, so every row matches a chest, not a letter.
| Patagonia | Patagonia builds it for | Marks & Spencer, by chart | Same label | Marks & Spencer builds it for | Marks & Spencer also prints |
|---|---|---|---|---|---|
| XXS | chest 33 in, hip 32 in, sleeve 30 in | XS | not published | chest 32 to 34 in | not published |
| XS | chest 35 in, hip 34 in, sleeve 32 in | S | XS | chest 35 to 37 in | not published |
| S | chest 37 in, hip 36 in, sleeve 33 in | S | S | chest 35 to 37 in | not published |
| M | chest 40 in, hip 39 in, sleeve 34 in | M | M | chest 38 to 40 in | not published |
| L | chest 44 in, hip 43 in, sleeve 35 in | XL | L | chest 44 to 46 in | not published |
| XL | chest 47 in, hip 46 in, sleeve 36 in | XXL | XL | chest 47 to 49 in | not published |
| XXL | chest 50 in, hip 49 in, sleeve 37 in | XXXL | XXL | chest 50 to 52 in | not published |
| XXXL | chest 56 in, hip 55 in, sleeve 37.5 in | not made | XXXL | 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
- Patagonia size guide, read on 2026-09-18.
- Marks & Spencer size guide, read on 2026-09-18.