The name basically tells you why this shirt is so awesome. A flannel... that zips up... and is insulated with a quilted lining. Let's take a moment for the ingenuity. To take things all the way to the top, we use only high-quality materials, from the brushed flannel to the zipper front. This is a shirt that lives close to jacket territory, making it just as perfect to throw over a hoodie as it is under a coat.