Sizing Chart

Helmet Size Circumference (cm.) Circumference (in.) Hat Size
X-Small 50 - 54 19.5" - 21.5" 6 1/4 - 6 3/4
Small 52 - 56 20.5" - 22" 6 1/2 - 7
Medium 55 - 59 21.5" - 23.5" 6 7/8 - 7 3/8
Large 58 - 63 23" - 25" 7 1/4 - 7 7/8