The Men's Patagonia Lightweight Insulated Fjord Flannel Shirt is made from soft yet durable cotton in conversion brushed flannel with 80-g Thermogreen recycled polyester insulation. The light insulation keeps you warm in a casual, timeless style. Featuring two chest pockets with button-closure flaps to keep valuables secure and two side-entry handwarmer pockets to help get the fingers working again in cold weather. The full-length, button-front placket provides easy adjustability to accommodate changing conditions. Cuffs can be worn buttoned in the cold or unbuttoned to allow for easy sleeve-rolling in warmer weather. It is made with a shirttail hem to go with most everything and everywhere, from casual hangouts to commuting to work or school.