Gymshark to DESCENTE size
The short answer
Gymshark XS is DESCENTE M by the two brands' own charts. 4 of 4 Gymshark sizes land on a different label at DESCENTE.
Both brands publish the body chest each size is cut for, so every row matches a chest, not a letter.
On 3 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.
| Gymshark | Gymshark builds it for | DESCENTE Japan sizing, by chart | Same label | DESCENTE builds it for | DESCENTE also prints |
|---|---|---|---|---|---|
| XS | chest 37 in, waist 29.5 in | M | not published | chest 35 to 37.4 in, waist 29.5 to 31.9 in | not published |
| S | chest 39 in, waist 31.5 in | O | S | chest 38.2 to 40.6 in, waist 32.7 to 35 in | not published |
| M | chest 41 in, waist 33.5 in | XO | M | chest 39.8 to 42.1 in, waist 34.3 to 36.6 in | not published |
| L | chest 43 in, waist 35.5 in | 2XO(XA) | L | chest 41.3 to 43.7 in, waist 35.8 to 38.2 in | not published |
| XL | chest 45 in, waist 37.5 in | not made | not published | not published | not published |
| XXL | chest 47 in, waist 39.5 in | not made | not published | not published | not published |
| XXXL | chest 49 in, waist 41.5 in | not made | not published | 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
- Gymshark size guide, read on 2026-09-18. Gymshark on TrueToSize
- DESCENTE Japan sizing size guide, read on 2026-09-25.