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Winter-ready revisions make our Backcountry MTN Air EVOLVE Hooded Jacket the ideal midlayer for cold-weather mountain pursuits. We added Primaloft's EVOLVE liner for eco-conscious insulation that stands up to the storm and lets air permeate, allowing comfort on high-output adventures. The jacket's athletic fit and two-way stretch composition allow us to be active in our climbs, treks, and tours, and the fixed hood provides coverage against the winds we face in the alpine winter.