When windswept ridgelines and frozen lakes call your name, the Outdoor Research Timberline Trapper Cap delivers the essential protection serious winter adventurers demand. This alpine-ready trapper hat combines full-coverage ear flaps with UPF 50+ sun protection, shielding you from both biting winds and intense UV reflection off snow-covered terrain. The brushed interior provides next-to-skin comfort during long days on the trail, while the DWR-treated exterior sheds light snow and resists wind penetration. Built with bluesign® approved recycled materials and featuring moisture-wicking performance that adapts to your activity level, this cold weather headwear proves that sustainability and serious mountain performance can go hand in hand. Whether you're ice fishing at dawn or tackling exposed alpine routes, the Timberline Trapper keeps you comfortable and protected when winter conditions demand your full attention on the adventure ahead.