Size : 55. Helmet certified by the UTAC/CRITT protocol in accordance with directive 89/686/EEC. 30 ventilation holes and 9 ducts face forward in the direction of air intake and face up and backward in the direction of heat removal. For optimal protection, the helmet must be in close contact with the head without pressure points. When the harness is properly adjusted, the helmet should not tilt forward, backward, or sideways, even when you are in motion. The 4-point harness includes the head for better support. Harness adjustable by a sliding loop at the chin. Colour: dark brown. Material: velvet.