Rab Filament Headband

"This warm, breathable headband with a flat profile for optimum protection under the helmet is designed for mountain missions in the cold. It reliably protects you from the cold during mountain runs, frosty climbs or bike tours in winter thanks to its snug fit combined with a low profile and outstanding breathability. It is made from lightweight, moisture-wicking Thermicu2122 S fabric with alternating strips of high- and low-pile fleece, making it u00e4uu00extremely efficient for less weight and providing an excellent balance of warmth and breathabilityu00e4t. Thanks to its minimal seams, the headband fits easily under a climbing, skiing or cycling helmet and gives you an extra portion of warmth without extra volume"