Throw on the Men's Lofoten Alpha Insulated Jacket from Norrona when you need lightweight, highly compressible warmth that won't let you down. The interior mesh lining is treated with a Polygiene anti bacterial treatment so you don't have to worry about your stank after a long day spent slogging uphill in the mountains. To keep you warm on those summit ridgelines Norrona added Polartec Alpha synthetic insulation. This jacket can be worn as a shell to handle light precipitation, or can be worn under an outer layer to provide excellent insulation at high altitude. When not in use, the Alpha can be stowed into its own pocket for easy transport.