It looks like a regular flannel. But it's got high-performance superpowers. Styled after the flannel shirts worn by modern mountain men everywhere, the Flylow Handlebar Tech Flannel is actually a temperature-regulating midlayer in disguise. Ride the park, hike the backcountry, or just live in this quick-drying, long-sleeved polyester shirt, which has snap buttons, a collar, and a long fit.