Whether you're ascending or descending, you need technical gear when things are steep, snowy, and maybe even slightly sketchy. The North Face's Summit L5 GTX Pro Pants can't protect you from the terrain, but they can protect you from the elements that come with it. Its three-layer, Gore-Tex construction is waterproof,windproof, and breathable, so you'll stay dry even when the snow is deep, the wind is strong, and you're working hard. Full-length side zippers provide ventilation on the skin track and easy access to your boots when you need to make adjustments. Articulated knees and the adjustable suspenders and belt provide a natural fit that encourages your full range of motion so you can focus on the adventure at hand, while Keprotec kickpatches defend the hems against your ski edges and crampons in the event of a poorly placed step.