Athleta to Decathlon leggings size
The short answer
Athleta XXS is Decathlon 2XS by the two brands' own charts. 2 of 7 Athleta sizes land on a different label at Decathlon.
Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.
| Athleta | Athleta builds it for | Decathlon, by chart | Same label | Decathlon builds it for | Decathlon also prints |
|---|---|---|---|---|---|
| XXS | waist 24.3 in, hip 34 in | 2XS | 2XS | waist 23.6 to 24.8 in, hip 31.1 to 33.5 in | not published |
| XS | waist 25.3 to 26.3 in, hip 35 to 36 in | XS | XS | waist 25.2 to 26.8 in, hip 33.5 to 35.4 in | not published |
| S | waist 27.3 to 28.3 in, hip 37 to 38 in | S | S | waist 27.2 to 28.7 in, hip 35.4 to 37.8 in | not published |
| M | waist 29.3 to 30.3 in, hip 39 to 40 in | M | M | waist 29.1 to 31.1 in, hip 37.8 to 40.2 in | not published |
| L | waist 31.8 to 33.3 in, hip 41.5 to 43 in | L | L | waist 31.5 to 33.9 in, hip 40.2 to 42.5 in | not published |
| XL | waist 34.3 in, hip 44.5 in | XL | XL | waist 34.3 to 36.6 in, hip 42.5 to 44.9 in | not published |
| 1X | waist 38 to 40 in, hip 47.3 to 49.3 in | 2XL | not published | waist 37 to 39.4 in, hip 44.9 to 47.2 in | not published |
| 2X | waist 42 to 44.5 in, hip 51.3 to 53.8 in | not made | not published | not published | not published |
| 3X | waist 47 to 49.5 in, hip 56.3 to 58.8 in | not made | not published | not published | not published |
What wearers say
Charts describe a garment. People who own both brands describe a fit, and their answer ranks above this table once five of them stand behind it. Pick your size in the converter to see whether there are enough yet.
Sources
- Athleta size guide, read on 2026-09-17. Athleta on TrueToSize
- Decathlon size guide, read on 2026-09-18.