Mammut Hat Size Chart
Mammut
Caps and Hats
| Sizes | Head circumference |
|---|---|
| XXS/XS | 20.1-21.3 in. |
| S/M | 21.3-22.8 in. |
| L/XL | 22.8-24.4 in. |
| one size | 21.3-23.6 in. |