To ensure proper sizing, please do the following:

HJC Helmet Sizing:

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  

XXL
 
63-64
 
7 7/8 - 8
  24 3/4 - 25 1/4  

XXXL
 
65-66
 
8 1/8 - 8 1/4
  25 5/8 - 26  
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
 

HJC Mens Snowmobile Bib Sizing Chart

Your Inseam Measurement Your Chest Measurement Your HJC Bib Size
NA32" to 34" Inches XSmall
30" Inches 36" to 38" Inches Small
31" Inches 40" to 42" Inches Medium
32" Inches 44" to 46" Inches Large
33" Inches 48" to 50" Inches XLarge
34" Inches 52" to 54" Inches XXLarge
35" Inches 56" to 58" Inches XXXLarge

HJC Womens Snowmobile Bib Sizing Chart

Your Inseam Measurement Your Chest Measurement Your HJC Bib Size
29" Inches 32" to 34" Inches XSmall
30" Inches 36" to 38" Inches Small
31" Inches 40" to 42" Inches Medium
31" Inches 44" to 46" Inches Large
31" Inches 48" to 50" Inches XLarge
32" Inches 52" to 54" Inches XXLarge

Men's Boot Size Conversion:

US Size Euro Size UK Size Inches CM
6 39 5.5 9.25" 23.5
6.5 39 6 9.5" 24.1
7 40 6.5 9.625" 24.4
7.5 40-41 7 9.75" 24.8
8 41 7.5 9.9375" 25.4
8.5 41-42 8 10.125" 25.7
9 42 8.5 10.25" 26
9.5 42-43 9 10.4375" 26.7
10 43 9.5 10.5625" 27
10.5 43-44 10 10.75" 27.3
11 44 10.5 10.9375" 27.9
11.5 44-45 11 11.125" 28.3
12 45 11.5 11.25" 28.6
13 46 12.5 11.5625" 29.4
14 47 13.5 11.875" 30.2
15 48 14.5 12.1875" 31
16 49 15.5 12.5" 31.8

Women's Boot Size Conversion:

US Size Euro Size UK Size Inches CM
4 35 2 8.1875" 20.8
4.5 35 2.5 8.375" 21.3
5 35-36 3 8.5" 21.6
5.5 36 3.5 8.75" 22.2
6 36-37 4 8.875" 22.5
6.5 37 4.5 9.0625" 23
7 37-38 5 9.25" 23.5
7.5 38 5.5 9.375" 23.8
8 38-39 6 9.5" 24.1
8.5 39 6.5 9.6875" 24.6
9 39-40 7 9.875" 25.1
9.5 40 7.5 10" 25.4
10 40-41 8 10.1875" 25.9
10.5 41 8.5 10.3125" 26.2
11 41-42 9 10.5" 26.7
11.5 42 9.5 10.6875" 27.1
12 42-43 10 10.875" 27.6