FULL-FACE HELMET HILLARD

Size Head Circumference (cm) Head Circumference (in)
Medium (M) 53-55 20.9-21.7
Large (L) 56-57 22.0-22.4
Extra Large (XL) 58-59 22.8-23.2
Extra Extra Large (XXL) 60-61.5 23.6-24.2