Running in winter conditions is challenging. Maintaining comfort for optimal performance in cold and wet environments requires protection from all the elements. The Norvan SL Insulated Hoody is a minimalist, superlight, packable jacket for running in the inclement weather of winter. GORE-TEX SHAKEDRY™ product technology eliminates the need for a face fabric and does not require DWR treatments. Arc'teryx designers developed innovative design solutions to insulate the jacket with highly breathable and packable Coreloft™ Compact 40 insulation. The Dope Permeair™ 20 liner allows excess heat to escape and manages moisture.