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Norrna crafted the Women's Lyngen Clo 100 Insulated Jacket with ultra-light, compressible materials so it can stuff easily into its own stow pocket until you need it. When the temps plummet at high altitudes, just pull the Lyngen Clo 100 Jacket out of your pack and zip into its plush Primaloft One insulation. A wind-resistant outer shell fends off the windchill, and elasticized cuffs hold your body heat in. Layer this sleek, light puffy under your shell when the weather turns truly foul.