Size Chart: Vapor Helmet

HELMET SIZING

  S/M
Size Range 21-23 in 53-59 cm
Weight 6.6 oz 188 g
  M/L
Size Range 23-25 in 58-63 cm
Weight 7 oz 199 g
How to measure:
Head: Measure around the largest part of the head–about one inch above the eyebrows.