Oysho to Smartwool leggings size
The short answer
Oysho M is Smartwool S by the two brands' own charts. 4 of 4 Oysho sizes land on a different label at Smartwool.
Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.
On 3 sizes the charts land two or more sizes from the same label. Brands do not measure the body the same way, so on those rows treat the chart answer and the same label as the two ends of a range.
| Oysho | Oysho builds it for | Smartwool, by chart | Same label | Smartwool builds it for | Smartwool also prints |
|---|---|---|---|---|---|
| XXS | waist 24 to 25 in, hip 36 to 37 in | not made | not published | not published | not published |
| XS | waist 25 to 26 in, hip 37 to 38 in | not made | not published | not published | not published |
| S | waist 26 to 27 in, hip 38 to 39 in | not made | S | not published | not published |
| M | waist 27 to 29 in, hip 39 to 41 in | S | M | waist 29 to 31 in, hip 36 to 38 in | not published |
| L | waist 30 to 33 in, hip 42 to 45 in | S or M | L | waist 29 to 31 in, hip 36 to 38 in | not published |
| XL | waist 33 to 35 in, hip 45 to 47 in | M | XL | waist 32 to 34 in, hip 39 to 41 in | not published |
| XXL | waist 36 to 39 in, hip 48 to 51 in | L or XL | XXL | waist 35 to 37 in, hip 42 to 44 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
- Smartwool size guide, read on 2026-09-18.