Between steep approaches to the climbing wall and fast-paced ascents up the skintrack, moving quickly in cold mountain weather requires an insulating layer that remains breathable and insulates against the cold. The North Face's Ventrix Women's Hooded Insulated Jacket does both with its highly air-permeable material that rapidly allows body heat to escape when we're scrambling up steep scree or powering through kick-turns and near-vertical bootpacks.