Sizing Chart

Helmet Size Hat Size Circumference (cm.) Circumference (in.)
Small 6 3/8 - 7 46 - 56 20" - 22"
Medium 6 7/8 - 7 3/8 54 - 59 21.5" - 23"
Large 7 1/4 - 8 58 - 68 22.8" - 25"