The Outdoor Research Wind Warrior Hat is constructed of Windstopper Technical Fleece for the ultimate warmth in stormy conditions. Polartec Wind Pro panels provide protection over the ears without buffering sound, allowing you to hear your climbing partners. Constructed to fit close to the head for a contoured fit warmth stays in, and weather stays out. The full fleece lining adds additional insulation for warmth in the coldest conditions. Constructed of Windstopper Technical Fleece. Polartec Wind Pro ear panels improve hearing. Full eece lining for additional warmth. Four panel crown construction. Contoured ear band. Back stretch panel adjusts fit. Avg. wt. 2.2 oz.