When your alpine ascent demands both warmth and breathability, the Outdoor Research Crescent Fleece Beanie delivers technical performance that keeps pace with your ambitions. This lightweight merino wool beanie combines recycled polyester with premium merino wool in a brilliant 70/29 blend that prevents overheating during high-output activities while providing the insulation you need on snowy trails and exposed ridgelines. The natural anti-odor properties of merino wool mean you can wear it day after day on extended backcountry adventures without worry, while the quick-drying fabric handles moisture from both sweat and snow with equal efficiency. At just 28g, this technical beanie won't weigh down your pack, but its Movement Mirroring Stretch construction ensures a comfortable, secure fit whether you're navigating technical terrain or simply enjoying a winter trail run – proving that the best mountaineering gear performs as hard as you do.