Unisex UV hat size guide - Columbia
Unisex UV hat - Columbia
| Size | Head circumference (cm) |
| S/M | 55 - 56 |
| M/L | 57 - 61.5 |
Practical tip: to take the measurement, stand at the strongest point on your head. This is in the middle of the forehead, generally 1 cm above the eyebrows, where the hat will rest. Take the measurement keeping your head upright and the ribbon horizontal.
