The Patagonia Men's Lightweight Insulated Fjord Flannel Shirt blends classic flannel style with added warmth for cold-weather comfort. Built with soft yet durable Cotton in Conversion brushed flannel, it offers the timeless look of a button-front shirt with the bonus of lightweight insulation. Thermogreen recycled polyester fill adds reliable warmth without excess bulk, while a smooth recycled polyester lining ensures easy layering. With chest pockets for storage, side-entry handwarmer pockets, and adjustable cuffs, this piece balances function and everyday style. Made in a Fair Trade Certified factory, it delivers sustainable warmth for casual wear and beyond.