Hello,
I thinking I should take a size Medium. I measure 22" or 56cm. I heard someone with a 57cm head took a small because the medium was too big? Also I am trying to decide if I should get this helmet or the K2 Moxie. I know the G9 fits my head shape. I don't know if the k2 Moxie fits the same size head shape? Thanks alot.

Tech Specs:

Material:

[Shell] Polycarbonate, [Liner] EPS 

Ventilation:

12 vents with included plugs 

Adjustability:

Adjustable strap with clip buckle 

Weight:

(13.5oz) 383g 

Recommended Use:

Freeride, all terrain 

Manufacturer Warranty:

1 year 

Country of Origin:

China