Tech Fabric: Merino Wool with Tencel Size: Adult, One size fits most. Also fits Juniors and Teens; Weight - 0.9 oz. Built for Performance: Breathable and lightweight, the combination of Merino Wool and Tencel provides odor-resistant coverage while managing moisture. Sustainability: Tencel Active Cellulosic fibers are derived from renewable wood sources and the fabric is 100% biodegradable, meaning it's a sustainable option for all of your outdoor adventures. Multi-functional: Great as a standalone beanie, but also works well under helmets when a bit of extra coverage is needed. Perfect for any activity where you might work up a sweat. Turtle Fur Turtle Fur Merino Wool Tencel Beanie