Patagonia Lightweight Insulated Fjord Flannel Shirt pairs classic flannel styling with lightweight Thermogreen insulation for versatile layering. Wear it as a cozy mid-layer or a light shirt-jacket in transitional weather. Key attributes: Multicolor | Old growth green | Cotton flannel | Lightweight Thermogreen insulation | Breathable lining | DWR-treated lining | Button front closure | Two button-flap chest pockets | Welt handwarmer pockets | Adjustable cuffs | Classic shirt silhouette | Shirttail hem | Heritage-inspired details | Button-front placket | Dimensions & fit: Regular fit | Composition & care: Body: 100% cotton brushed flannel | Lining: 100% polyester taffeta | Insulation: 80 g Thermogreen polyester