A classic rugged piece, perfect for the job site or relaxing by the campfire. The flannel lining keeps you warm and cozy without adding bulk, and the time-honored silhouette keeps you confident.Easy and long-wearing, it's bound to become one of your favorites. 100% 12 oz cotton duck canvas. 100% cotton flannel liner. Button spring snap front closure. 2 front snap pockets. Inside technology pockets. Snap adjustable cuffs. Shirt seam.