Sizing Chart

Helmet Size Convention Chart


 


Size
 
Centimeter
 
Hat Size
Inches
 
XXS
 
51-52 
 
6 3/8-6 1/2
 
20-20 1/2 

 
XS
 
53-54
 
6 5/8-6 3/4
 
20 7/8-21 1/4

 
S
 
55-56
 
6 7/8-7
 
21 5/8-22

 
M
 
57-58
 
7 1/8-7 1/4
 
22 1/2-22 7/8 

 
L
 
59-60
 
7 3/8-7 1/2
 
23 1/4-23 5/8

 
XL
 
61-62
 
7 5/8-7 3/4
 
24-24 3/8

 
2XL
 
63-64
 
7 7/8-8
 
24 3/4-25 1/4

 
3XL
 
65-66
 
8 1/8-8 1/4
 
25 5/8-26

 
4XL
 
67-68
 
8 3/8-8 1/2
 
26 3/8-26 3/4

 
5XL
 
69-70
 
8 3/4-8 3/4
 
27 1/4-27 5/8

 
Youth S
 
49-50
 
6 1/8-6 1/4
 
19 1/4-19 3/4

 
Youth M
 
51-52
 
6 3/8-6 1/2
 
20-20 1/2

 
Youth L
 
53-54
 
6 5/8-6 3/4
 
20 7/8-21 1/4

 
Youth S/M
 
49-50
 
6 1/8-6 1/4
 
19 1/4-19 3/4

 
Youth L/XL
 
51-52
 
6 3/8-6 1/2
 
20-20 1/2

 


RPHA Series, FG-Jet, FG-17 Helmet Size Chart (Only FG-17 is available up to size 3XL)


 


Size
 
Centimeter
 
Hat Size
Inches
 
XS
 
54-55 
 
6 3/4-6 7/8
 
21 1/4-21 5/8

 
S
 
55-56
 
6 7/8-7
 
21 5/8-22

 
M
 
57-58
 
7 1/8-7 1/4
 
22 1/2-22 7/8

 
L
 
58-59
 
7 1/4-7 3/8
 
22 7/8-23 1/4 

 
XL
 
60-61
 
7 1/2-7 5/8
 
23 5/8-24

 
2XL
 
62-63
 
7 3/4-7 7/8
 
24 3/8-24 3/4

 
3XL
 
64-65
 
8-8 1/8
 
25 1/4-25 5/8