Size guide

Milwaukee Men's Riding Motorcycle Plain Toe Leather Riding Boots Side Zipper W/Laces New-BFR 9050 W

Men’s Armored Checkered Flannel Biker Shirt w/ Aramid® by DuPont™ Fibers

Modular Helmet Size Reference:

  • X-Small: cm 53-54 | In: 20.8 - 21.3
  • Small: cm 55-56 | In: 21.6 - 22 
  • Medium: cm 57-58 | In: 22.4 - 22.8 
  • Large: cm 59-60 | In 23.2 - 23.6 
  • XL: cm 61-62 | In 24 - 24.4 
  • XXL: cm 63-64 | In 24.8 - 25.2

3/4 Helmet Size Reference:

Size                               cm                       inches

XXS                         50.8-52.07            20-20 1/2

XS                           53.02-53.98          20 7/8-21 1/4

S                             54.93-55.88          21 5/8-22

M                            56.83-57.73           22 3/8-22 3/4

L                             59.05-60.00           23 1/4-23 5/8

XL                           60.96-61.91           24-24 3/8

XXL                         62.87-64.12            24 3/4- 25 1/4