Measure the circumference of the head just above the ears and eyebrows.
The helmet should go all the way down and shouldn't be tilted.
HEAD CIRCUMFERENCE
XXS - XS: 49 - 52 cm
S - M: 53 - 56 cm
L - XL: 57 - 59 cm
Size Circonf. of the head (IN)
XXS - XS: 19.3 - 20.5"
S - M: 20.9 - 22"
L - XL: 22.4 - 23.2"
Italiano
