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Triple 8 Helmet Size Chart

Single Size Helmets

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

Adjustable Size Helmets

SizeHead Circumference (inches)Head Circumference (centimeters)
XS/S18.9 - 21.348 - 54
S/M21.7 - 22.855 - 58
L/XL23.2 - 2459 - 61

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.