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Triple Eight Helmet Size Chart

SizeHead Circumference (inches)Head Circumference (centimeters)
XS20.10 - 20.5051 - 52
S20.60 - 21.3052 - 54
M21.40 - 22.0054 - 56
L22.10 - 22.9056 - 58
XL23.00 - 24.0058 - 60
Note.  To ensure a perfect fit, measure the circumference of your head starting in the middle of your forehead and match it with the sizes above.