We've always admired the classics, and flannel is one of those trusted, comfortable materials we can never get enough of. This soft, stretchy standby is worthy of being the day-in, day-out go-to of mountain life. We gave this breathable, double-brushed organic cotton a touch of stretch, plus a spin with a vintage garment wash for instant, lived-in softness. Thoughtful back seaming creates flattering shape with plenty of room to move. A lightweight construction adds seasonal warmth under a vest or a puffy, but won't overheat when worn indoors.