Oysho to Decathlon leggings size
The short answer
Oysho XXS is Decathlon 2XS by the two brands' own charts. 5 of 7 Oysho 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.
| Oysho | Oysho builds it for | Decathlon, by chart | Same label | Decathlon builds it for | Decathlon also prints |
|---|---|---|---|---|---|
| XXS | waist 24 to 25 in, hip 36 to 37 in | 2XS | 2XS | waist 23.6 to 24.8 in, hip 31.1 to 33.5 in | not published |
| XS | waist 25 to 26 in, hip 37 to 38 in | XS | XS | waist 25.2 to 26.8 in, hip 33.5 to 35.4 in | not published |
| S | waist 26 to 27 in, hip 38 to 39 in | XS | S | waist 25.2 to 26.8 in, hip 33.5 to 35.4 in | not published |
| M | waist 27 to 29 in, hip 39 to 41 in | S | M | waist 27.2 to 28.7 in, hip 35.4 to 37.8 in | not published |
| L | waist 30 to 33 in, hip 42 to 45 in | L | L | waist 31.5 to 33.9 in, hip 40.2 to 42.5 in | not published |
| XL | waist 33 to 35 in, hip 45 to 47 in | L | XL | waist 31.5 to 33.9 in, hip 40.2 to 42.5 in | not published |
| XXL | waist 36 to 39 in, hip 48 to 51 in | 2XL | 2XL | waist 37 to 39.4 in, hip 44.9 to 47.2 in | 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
- Oysho size guide, read on 2026-09-18. Oysho on TrueToSize
- Decathlon size guide, read on 2026-09-18.