Adidas to Gymshark size
The short answer
adidas S is Gymshark XS by the two brands' own charts. 4 of 5 adidas 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.
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.
| adidas | adidas builds it for | Gymshark, by chart | Same label | Gymshark builds it for | Gymshark also prints |
|---|---|---|---|---|---|
| XS | chest 32.5 to 34 in, waist 27.5 to 29 in, hip 32 to 33.5 in | not made | XS | not published | not published |
| S | chest 34.5 to 36 in, waist 29.5 to 31.5 in, hip 34 to 36 in | XS | S | chest 37 in, waist 29.5 in | not published |
| M | chest 36.5 to 39 in, waist 32 to 34.5 in, hip 36.5 to 39 in | XS or S | M | chest 37 in, waist 29.5 in | not published |
| L | chest 39.5 to 42.5 in, waist 35 to 38 in, hip 39.5 to 42 in | M | L | chest 41 in, waist 33.5 in | not published |
| XL | chest 43 to 46.5 in, waist 38.5 to 42 in, hip 42.5 to 45.5 in | XL | XL | chest 45 in, waist 37.5 in | not published |
| 2XL | chest 47 to 51 in, waist 42.5 to 47 in, hip 46 to 49 in | XXXL | XXL | chest 49 in, waist 41.5 in | not published |
| 3XL | chest 51.5 to 56 in, waist 47.5 to 52 in, hip 49.5 to 53 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
- adidas size guide, read on 2026-09-18. adidas on TrueToSize
- Gymshark size guide, read on 2026-09-18. Gymshark on TrueToSize