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To determine the correct helmet size, wrap a measuring tape around your head, keeping the tape just above the ears and level front to back.

Snow Helmets
Bike Helmets

Snow Helmets

Adult Helmet SizingSize (cm)Size (in)
S52 - 55.520.5 - 21.75
M55.5 - 5921.75 - 23
L59 - 62.523 - 24.25
XL62.5 - 6524.5 - 25.5
 
Youth Helmet SizingSize (cm)Size (in)
XS48.5 - 5219.25 - 20.5
S52 - 55.520.5 - 21.75
M55.5 - 5921.75 - 23

Bike Helmets

Super Fit™ Helmet SizeSize (cm)Size (in)
XS47 - 5118.5 - 20
S51 - 5520 - 21.75
M55 - 5921.75 - 23.25
L59 - 6323.25 - 24.75
XL61 - 6524 - 25.55
*The Large Quarter Bike Helmet is the following dimensions: Large: 23.25" - 24.25" / 59 - 61.5 cm
 
Universal Fit Helmet SizeSize (cm)Size (in)
Child50 - 5519.75 - 21.75
Youth50 - 5719.75 - 22.5
Adult54 - 6121.25 - 24
Women50 - 5719.75 - 22.5
XL58 - 6522.75 - 25.5
 
YouthSize (cm)Size (in)
S/M46 - 5018 - 19.75
M/L50 - 5419.75 - 21.5
Toddler48 - 5218.75 - 20.5