One K Helmet Size
|
Euro
|
Inches
|
|
|
|
|
|
|
|
|
|
XSmall
|
51-52cm
|
20 1/8
|
6 3/ 8- 6 1/2
|
|
|
Small
|
53-54
|
20 3/4
|
6 5/8 - 6 3/4
|
|
|
| Medium
|
55-56
|
21.7
|
6 7/8 - 7
|
|
|
| Large
|
57-58
|
22.4
|
7 1/8 - 7 1/4
|
|
|
X Large
|
59-60
|
23.2
|
7 3/8 - 7 1/2
|
|
|
XX Large
|
61-62
|
24
|
7 5/8 - 7 3/4
|
|
|
One K
Measure around the middle of your forehead