It can be hard to find refuge from the cold on frigid mountaineering missions if you don't pack along the proper gear. Luckily Outdoor Research makes it easy to stay both warm and comfortable in the mountains, even when you're working hard. The OR Refuge Pants feature the warm yet breathable VerticalX insulation, which was made specifically for intensive high-output pursuits in cold conditions. Combined with a breathable fabric treatment, VerticalX works to keep you at an optimal temperature by allowing just the right amount of heat to escape as you push up steep ascents and technical ice climbing routes. It still maintains the right amount of warmth, however; so you won't find yourself lamenting the active insulation when you're taking a rest. Meanwhile, these pants provide a movement-mirroring stretch on technical alpine terrain, have double-separating side zippers for ventilation and convenience, and boast a special rear pocket that doubles as a stuff sack when you're packing up for longer trips and excursions.