Patagonia to Gymshark size
The short answer
Patagonia S is Gymshark XS by the two brands' own charts. 4 of 5 Patagonia sizes land on a different label at Gymshark.
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 | Gymshark, by chart | Same label | Gymshark builds it for | Gymshark also prints |
|---|---|---|---|---|---|
| XXS | chest 33 in, hip 32 in, sleeve 30 in | not made | not published | not published | not published |
| XS | chest 35 in, hip 34 in, sleeve 32 in | not made | XS | not published | not published |
| S | chest 37 in, hip 36 in, sleeve 33 in | XS | S | chest 37 in, waist 29.5 in | not published |
| M | chest 40 in, hip 39 in, sleeve 34 in | S or M | M | chest 39 in, waist 31.5 in | not published |
| L | chest 44 in, hip 43 in, sleeve 35 in | L or XL | L | chest 43 in, waist 35.5 in | not published |
| XL | chest 47 in, hip 46 in, sleeve 36 in | XXL | XL | chest 47 in, waist 39.5 in | not published |
| XXL | chest 50 in, hip 49 in, sleeve 37 in | XXXL | XXL | chest 49 in, waist 41.5 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.
- Gymshark size guide, read on 2026-09-18. Gymshark on TrueToSize