Adidas to Gap size
The short answer
adidas S is Gap XS by the two brands' own charts. 5 of 7 adidas sizes land on a different label at Gap.
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 | Gap, by chart | Same label | Gap builds it for | Gap also prints |
|---|---|---|---|---|---|
| XS | chest 32.5 to 34 in, waist 27.5 to 29 in, hip 32 to 33.5 in | XS | XS | chest 35 to 36 in, neck 13.5 to 14 in, sleeve 31 to 32 in | not published |
| S | chest 34.5 to 36 in, waist 29.5 to 31.5 in, hip 34 to 36 in | XS | S | chest 35 to 36 in, neck 13.5 to 14 in, sleeve 31 to 32 in | not published |
| M | chest 36.5 to 39 in, waist 32 to 34.5 in, hip 36.5 to 39 in | S | M | chest 37 to 38 in, neck 14 to 14.5 in, sleeve 32 to 33 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 39 to 41 in, neck 15 to 15.5 in, sleeve 33 to 34 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 to 48 in, neck 17 to 17.5 in, sleeve 35 to 35.5 in | not published |
| 2XL | chest 47 to 51 in, waist 42.5 to 47 in, hip 46 to 49 in | XXL | XXL | chest 49 to 52 in, neck 18 to 18.5 in, sleeve 35.5 to 36 in | not published |
| 3XL | chest 51.5 to 56 in, waist 47.5 to 52 in, hip 49.5 to 53 in | XXXL | XXXL | chest 55 in, neck 18.8 in, sleeve 36.5 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
- Gap size guide, read on 2026-09-18. Gap on TrueToSize