JETSTREAM BEANIE - Available as one size fits all. (Available Color: Open Country and Subalpine). PURPOSE BUILT - Cut from the same fabric as the Jetstream Jacket, the Jetstream WINDSTOPPER Beanie is ideal for charging up steep faces in bitter cold or sitting motionless on a windy ridge.. WINDSTOPPER TECHNOLOGY - A lofted micro-grid fleece backer delivers warmth, while the WINDSTOPPER membrane blocks frosty drafts.. SPECIFICALLY DESINGED - A pony tail port keeps things streamlined and a four-way stretch, air permeable band warms the back of your neck and ears without impeding hearing.. SITKA Gear - We pride ourselves on providing the highest quality apparel that ensures you're prepared to tackle any obstacle, in any element, under any condition. Check out our storefront to view our complete line up of industry leading products.