Based on vintage archive designs, our Insulated Flannel Jac-Shirt is a go-to for cold temperatures. The cotton flannel is brushed on both sides for outstanding softness. Quilted-through polyester insulation traps heat close to the body. Classic button-front and spread-collar design. Chest pockets protected by buttoned flaps. Low-set welted hand pockets. Shirttail hem. 2" box-quilt pattern.