Sitka Jetstream WS Beanie - The Jetstream Beanie was born from the same fabric as our celebrated Jetstream Jacket and will keep your head in the game while trudging up into the biting wind or glassing on an exposed ridgeline. A lofted micro-grid fleece backer supplies warmth while the WINDSTOPPER by GORE-TEX LABS membrane blocks drafts from your dome and forehead. Weight: 1.6 oz WINDSTOPPER by Gore-Tex LabsTechnology, Stretch-woven polyester face WINDSTOPPER by Gore-Tex Labs: Offers complete windproof protection through a durable, lightweight, and breathable membrane Style:600482