What Our Gearhead(R) Experts Are Saying: "This flannel is legit one of my most worn layers. It's got the cozy softness I want on chilly mornings but doesn't trap heat when the day warms up. It stretches like a tee but looks polished, so I can go from trail to town without swapping shirts."We live for layers that pull double duty, and the Performance Flannel Button Down from DU/ER is exactly that. Whether we're navigating airport terminals, heading to work, or chasing crisp fall air through mountain towns, this flannel keeps us looking sharp and feeling supremely comfortable.