Mother Nature was on a roll when she invented wool and sheep have been acting pretty smug ever since. Who can blame them? This wonder fiber warms even when wet. It’s breathable, wicks away moisture and even resists odor. But we’ve found a way to give it an ingenious upgrade. Because sandwiched between this cap’s hefty layers of itch-free merino wool is a 100% wind-blocking waterproof/breathable membrane. So you’ll stay warm and dry when the rest of the flock is soaked and shivering. Sleek, low-profile styling stays on even in a gale; roll it up or down as your ears demand.