Simplicity has always been the guide to the mountainsā¤and MH's focus for designing headwear for high-alpine environments is no different. The Micro Dome 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 their dome hats have been favored by alpinists and big-wall climbers for a quarter of century and counting.