Adidas to GU size
The short answer
adidas XS is GU S by the two brands' own charts. 5 of 7 adidas sizes land on a different label at GU.
Both brands publish the body chest each size is cut for, so every row matches a chest, not a letter.
| adidas | adidas builds it for | GU Japan sizing, by chart | Same label | GU builds it for | GU also prints |
|---|---|---|---|---|---|
| XS | chest 32.5 to 34 in, waist 27.5 to 29 in, hip 32 to 33.5 in | S | XS | chest 31.5 to 34.7 in, waist 26.8 to 29.9 in | not published |
| S | chest 34.5 to 36 in, waist 29.5 to 31.5 in, hip 34 to 36 in | M | S | chest 34.7 to 37.8 in, waist 29.9 to 33.1 in | not published |
| M | chest 36.5 to 39 in, waist 32 to 34.5 in, hip 36.5 to 39 in | M | M | chest 34.7 to 37.8 in, waist 29.9 to 33.1 in | not published |
| L | chest 39.5 to 42.5 in, waist 35 to 38 in, hip 39.5 to 42 in | XL | L | chest 40.9 to 44.1 in, waist 36.2 to 39.4 in | not published |
| XL | chest 43 to 46.5 in, waist 38.5 to 42 in, hip 42.5 to 45.5 in | XXL | XL | chest 44.1 to 47.2 in, waist 39.4 to 42.5 in | not published |
| 2XL | chest 47 to 51 in, waist 42.5 to 47 in, hip 46 to 49 in | 3XL | XXL | chest 47.2 to 50.4 in, waist 42.5 to 45.7 in | not published |
| 3XL | chest 51.5 to 56 in, waist 47.5 to 52 in, hip 49.5 to 53 in | 3XL | 3XL | chest 47.2 to 50.4 in, waist 42.5 to 45.7 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
- adidas size guide, read on 2026-09-18. adidas on TrueToSize
- GU Japan sizing size guide, read on 2026-09-25.