The Storm is a cutting-edge helmet that provides exceptional protection and is comfortable enough to wear all day in any conditions and for any kind of climbing. 22 streamlined vents keep the head cool on multi-pitch climbs and when conditions warm up on mountaineering routes. Two sizes have been optimized for a very broad fit range and the harness and dial system cradle the head low to keep the helmet in position even with dynamic movements. Size 1=Kids, size 2=Adults.