Under Armour to Boden clothing size
The short answer
Under Armour XXS is Boden 2 by the two brands' own charts.
Both brands publish the body bust each size is cut for, so every row matches a bust, not a letter or a number.
| Under Armour | Under Armour builds it for | Boden, by chart | Same label | Boden builds it for | Boden also prints |
|---|---|---|---|---|---|
| XXS | bust 31 to 32.5 in, waist 24.5 to 25.5 in | 2 | not published | bust 32 to 33 in, waist 25 to 26 in, hip 34 to 35 in | Letter XS |
| XS | bust 32.5 to 33.5 in, waist 25.5 to 27 in | 2 | not published | bust 32 to 33 in, waist 25 to 26 in, hip 34 to 35 in | Letter XS |
| SM | bust 33.5 to 36 in, waist 27 to 29 in | 6 | not published | bust 34.3 to 35 in, waist 27.3 to 28 in, hip 36.3 to 37 in | Letter S |
| MD | bust 36 to 38 in, waist 29 to 31 in | 8 | not published | bust 35.5 to 37 in, waist 28.5 to 30 in, hip 37.5 to 39 in | Letter M |
| LG | bust 38 to 41 in, waist 31 to 34 in | 12 | not published | bust 39.5 to 41 in, waist 32.5 to 34 in, hip 41.5 to 43 in | Letter L |
| XL | bust 41 to 44 in, waist 34 to 37 in | 14 | 16 | bust 41.5 to 43 in, waist 34.5 to 36 in, hip 43.5 to 45 in | Letter L |
| XXL | bust 44 to 47 in, waist 37 to 40 in | 18 | 18 | bust 45.5 to 47.5 in, waist 38.5 to 40.5 in, hip 47.5 to 49.5 in | Letter XL |
| 3XL | bust 47 to 50 in, waist 40 to 43 in | 18 | not published | bust 45.5 to 47.5 in, waist 38.5 to 40.5 in, hip 47.5 to 49.5 in | Letter XL |
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
- Under Armour size guide, read on 2026-09-18. Under Armour on TrueToSize
- Boden size guide, read on 2026-09-18.