SmartWool Women's Corbet 120 Vest Front Panel - 100% Polyester; Back - 48% Merino Wool, 44% Polyester, 8% Elastane; Lining - 56% Merino Wool, 44% Polyester; Fill - 75% Wool, 25% Polyester Knit in Vietnam Regular Fit - Center front zipper with draft flap and chin guard Back of vest uses stretchy knit fabric for ease of movement while putting Merino against skin and nylon/elastane against the elements Merino lined front panel and collar for sweat and odor management - Style: SW0SP241 2 secure zip hand pockets and internal secure zip chest pocket with media cord routing