Simplicity has always been our guide to the mountainsand our focus for designing headwear for high-alpine environments was no different. The Dome Perginon(TM) Pro is engineered to work with your helmet, so it fills a gap in your kit without complicating the rest of the system. It&';s sleek yet notable. It&';s effective yet humble. It&';s why our dome hats have been favored by alpinists and big-wall climbers for a quarter of century and counting. Uses: Ski / Snowsports, Alpine Climbing, Backpacking / Hiking Imported Constructed with Gore-Tex WindstopperA(R) fleece for relief from wind and weather Redesigned low-profile dome shape Snug fit for use under a hood or helmet Full ear coverage 1.7 oz / 50 g