Body measurements. Measure your body, not the garment. Use all measurements from the table.
| Size | Ankle circumference (cm) |
|---|---|
| XS | 16–18 |
| S | 19–21 |
| M | 22–24 |
| L | 25–28 |
| XL | 29–31 |
How to measure
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The tape measure should be snug but not tight. If you are between two sizes or outside the table, please ask us for advice.
Source: Booster size chart (https://www.booster.be/shop/bfg-rapid-strike-1-socks-3934/document/571), adopted on 30-09-2026.