Hybrid climbing helmet suitable for unisex applications mountaineering ice climbing big wall alpine climbing size adjustments adjustable headband adjustable chin strap inner padding foam padding chin padding without chin pad head lamp holders with headlamp mount 4 clips detachable outer materials polycarbonate kevlar carbon inner material polystyrene size head circumference 53 59 cm number of air vents 25 weight 186 g security standard en 12492 c