ADV Lumen Fleece Hat is a functional hat with reflective details designed for intense running in cold conditions. The hat is made of soft and highly functional jersey and comes with perforated reflective fabric at front and reflective print at back. Lumen - inspired by Nordic conditions In a place where darkness dominates most of the day, light is an essential commodity. Lumen is inspired by Nordic conditions and creates a unique style during dark workouts. - Soft and highly functional jersey fabric - Perforated reflective fabric at front - Reflective print at back - Tight fit