Ventilation,use air cooling make the air free Unique hole channel design in the high-speed flow near the fluid will produce low pressure, thus in the central large vents produce adsorption. Absorb cold air, hot air through the tail hole discharge. Easy to use,with magic buckle connection
Material: EPS Age Group: (Adults) Men Weight (g): Size M: 270g±10g /Size L:290g±10g Air Vents: 8 - 15 Type: Integrally-molded Helmet Size: M (54-58cm) L(58-61cm) Age Group: Men , Women, Teenager