Triple 8 Helmet Size Chart

Size	Head Circumference (inches)	Head Circumference (centimeters)
XS	20.10 - 20.50	51 - 52
S	20.60 - 21.30	52 - 54
M	21.40 - 22.00	54 - 56
L	22.10 - 22.90	56 - 58
XL	23.00 - 24.00	58 - 60

Size	Head Circumference (inches)	Head Circumference (centimeters)
XS/S	18.9 - 21.3	48 - 54
S/M	21.7 - 22.8	55 - 58
L/XL	23.2 - 24	59 - 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.