Arc'teryx to lululemon clothing size
The short answer
Arc'teryx XS is lululemon S by the two brands' own charts. 6 of 6 Arc'teryx sizes land on a different label at lululemon.
Both brands publish the body bust each size is cut for, so every row matches a bust, not a letter or a number.
| Arc'teryx | Arc'teryx builds it for | lululemon, by chart | Same label | lululemon builds it for | lululemon also prints |
|---|---|---|---|---|---|
| XS | bust 33.1 in, waist 26.8 in, hip 36.2 in | S | XS | bust 33 to 34 in | US 6 |
| S | bust 35 in, waist 28.7 in, hip 38.2 in | M | S | bust 35 to 36 in | US 8 |
| M | bust 37 in, waist 30.7 in, hip 40.2 in | L | M | bust 37 to 38.5 in | US 10 |
| L | bust 40.2 in, waist 33.9 in, hip 43.3 in | XL | L | bust 40 to 42 in | US 12-14 |
| XL | bust 44.1 in, waist 37.8 in, hip 47.2 in | 1X or XL | XL | bust 45 to 47 in | US 16-18 |
| XXL | bust 48 in, waist 41.7 in, hip 51.2 in | 2X or 1X | not published | bust 49 to 51 in | US 20-22 |
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
- Arc'teryx size guide, read on 2026-09-18.
- lululemon size guide, read on 2026-09-18. lululemon on TrueToSize