X3000, X70 HELMET SIZE CHART

X3000, X70

XS
S
MS
ML
L
XL
XXL
HEAD CIRCUM.
53 - 54
55
56
57 - 58
59
60 - 61
62 - 63

 

HEAD CIRCUMFERENCE

The circumference of the head is measured by winding the measuring tape around the head, at the point where the head is widest, at about the midpoint on the forehead, above the eyebrows.