Letter to JP leggings size
The short answer
By the formula, Letter M is JP 11 to 13.
No brand chart we have checked prints both systems, so this table is the arithmetic alone. Treat it as the label convention, not a fit.
| Letter | JP |
|---|---|
| XXS | 1 |
| XS | 3 to 5 |
| S | 7 to 9 |
| M | 11 to 13 |
| L | 15 to 17 |
| XL | 19 to 21 |
| XXL | 23 to 25 |