Simplicity has always been Mountain Hardwear's guide to the mountains-and their focus for designing headwear for high-alpine environments is no different. The Dome P 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, effective yet humble. It's why Mountain Hardwear dome hats have been favored by alpinists and big-wall climbers for a quarter of century and counting.