What Our Gearhead(R) Experts Are Saying: "This is the beanie I grab for cold, high-output days. The merino wool keeps it breathable and warm even when I'm working hard, and the microfleece lining at the ears adds just the right amount of softness where it counts." When the temps drop and the adventure calls, we count on the Mountain Hardwear Caelum Dome to keep our heads warm without any unnecessary fluff. Made from 100% merino wool, it offers all the natural benefits we love-breathability, odor resistance, and moisture-wicking warmth-while the recycled microfleece earband adds a touch of softness that keeps us comfortable from trailhead to summit. Whether we're skinning into the backcountry, hiking in brisk conditions, or just out braving the daily chill, the Caelum Dome delivers reliable protection without overheating. It's simple, effective, and built for real mountain use-no pom-poms required.