Motocross Dual Sport Off Road Dirt Bike ATV Motorcycle Helmet 406_179 Pink/White w/Visor (Large) Small ---- 56-57 ---- 22" - 22 7/16" ---- 7 - 7 1/8 Medium ----58-59 ---- 22 13/16" - 23 1/4" ----7 1/4 - 7 3/8 Large---- 60-61 ---- 23 5/8" ----7 1/2 - 7 5/8 X-Large --- 62-63---- 24 3/8" - 24 13/16" ----7 3/4 - 7 7/8