The size chart below shows which measurements around the ankle and calf give a compression of 18-21mmHg. Add to this the length of your legs. If you know that you have long shins, go up a size, otherwise the calf supports will be perceived as too short. If you have short shins but wide legs, you can stay in your size because the length is usually swallowed by the width.
| Size | Ankle measurement B |
Calf measurement C |
| S | 18 - 20 | 29 - 34 |
| M | 20 - 23 | 31 - 37 |
| L | 22 - 25 | 34 - 40 |
| XL | 23 - 27 | 35 - 43 |