Whistles to Arc'teryx clothing size
The short answer
Whistles 16 is Arc'teryx L 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.
| Whistles | Whistles builds it for | Arc'teryx, by chart | Same label | Arc'teryx builds it for | Arc'teryx also prints |
|---|---|---|---|---|---|
| 04 | bust 30 in, waist 23.5 in, hip 34.5 in | not made | not published | not published | not published |
| 06 | bust 31 in, waist 24.5 in, hip 35.5 in | not made | not published | not published | not published |
| 08 | bust 32 in, waist 25.5 in, hip 36.5 in | not made | not published | not published | not published |
| 10 | bust 34 in, waist 27.5 in, hip 38.5 in | XS or S | not published | bust 33.1 in, waist 26.8 in, hip 36.2 in | not published |
| 12 | bust 36 in, waist 29.5 in, hip 40.5 in | S or M | not published | bust 35 in, waist 28.7 in, hip 38.2 in | not published |
| 14 | bust 38 in, waist 31.5 in, hip 42.5 in | M | not published | bust 37 in, waist 30.7 in, hip 40.2 in | not published |
| 16 | bust 40 in, waist 33.5 in, hip 44.5 in | L | not published | bust 40.2 in, waist 33.9 in, hip 43.3 in | not published |
| 18 | bust 42.5 in, waist 35.5 in, hip 46.5 in | XL or L | not published | bust 44.1 in, waist 37.8 in, hip 47.2 in | not published |
| 20 | bust 45 in, waist 38 in, hip 49 in | XL | not published | bust 44.1 in, waist 37.8 in, hip 47.2 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
- Whistles size guide, read on 2026-09-18.
- Arc'teryx size guide, read on 2026-09-18.