Part shirt, part jacket, the 509 Tech Flannel doubles down by combining style and function into an everyday staple. Wrenching in the shop, chopping wood, or heading into town, this shirt is a notch above your basic flannel thanks to quilted insulation, a tech taffeta lining, and rugged Taslan shoulder panels for added weather protection. Two chest pockets (one zippered) and sideseam pockets provide a safe spot for phone, wallet, and keys.