Rothco Heavy Weight Solid Flannel Shirt Black M k-M. The 8-oz 100percent cotton heavyweight flannel outershell provides unbelievable warmth and comfort. Our flannel shirt features a button up front and two button flap pockets that are perfect for holding important gear. Specifications for Rothco Heavy Weight Solid Flannel Shirt: Manufacturer: Rothco Age Group: Adults Apparel Fit: Regular Gender: Male Fabric/Material: 100percent Cotton Fastener/Closure Type: Buttons Features of Rothco Heavy Weight Solid Flannel Shirt Material: Cotton Material Specs: 8oz. Fabric Weather: Cold Weather Package Contents: Rothco Heavy Weight Solid Flannel Shirt Rothco Heavy Weight Solid Flannel Shirt Black M 4637-Black-M