The wildly popular Armour has been updated with a new fit profile for a wide range of head shapes and sizes. Other updates include a new durable and easy-to-use rotating size adjustment wheel, and larger headlamp holder clips for greater ease of use. The molded ABS shell has vents on the sides for excellent ventilation . Rock Climbing, Ice Climbing, Mountaineering • Hybrid construction • Rotating size adjustment wheel • Comfort chin strap • Headlamp compatible • UIAA 106, CE EN 12492 certified Size: 52-62 cm / 50-57 cm Weight: 370 g / 315 g