With a visual nod to flannel's blue collar roots, our Leadville Flannel L/S shirt delivers more performance than meets the eye, thanks to its Thermo Tech fibers. You get UPF 50+, quick dry and moisture wicking, wrinkle resistance and plenty of warmth. It comes in three appealing shades. 100% Polyester. Wrinkle resistant & quick dry, sun protection UPF 50+, dual chest pockets with button closure, shirt tail hem, thermal flannel. Material: Polyester.