evo.com | Patagonia Button-Downs > The Patagonia Lightweight Insulated Fjord Flannel Shirt combines the cozy comfort of soft brushed cotton with sneaky 80g Thermogreen(R) recycled polyester insulation that traps heat without the bulk. With its timeless styling that works everywhere from morning coffee runs to evening bonfires, this shirt delivers surprising warmth while maintaining that classic flannel look you love. Body 4.9-oz 100% Cotton in Conversion brushed flannel Care Instructions Machine Wash Warm, Do Not Bleach, Tumble Dry Low, Do Not Iron Insulation 80g Thermogreen(R) 100% recycled polyester Two Chest Pockets with Buttons Regular Fit | Patagonia Lightweight Insulated Fjord Shirt Men's 2025 - Small Green | Cotton/Polyester