A small piece of gear that makes a huge difference. A hat that is both warm and cozy is everything. And, all things being equal, having a killer design is a major bonus. Meet our Advanced Windblock Knit hat. A rib-knit hat with wind-blocking fabric at front and warming polyester fleece lining. Cooly designed to protect the ears, the Windblock hat meets the required warm and cozy mandate. It’s everything.