Keep your head and face protected when you're on a mountain hike or out on the water. The Marin is made with polyester performance fabrics that are UPF 50+ and will shield you from the intense sun! It also features a darker underbrim to reflect the suns bright light. With strategically placed side vents, you are sure to keep you cool and dry during all your excursions. When the breeze picks up, rest assured that the Marin will stay on your head with the adjustable neck cord for the perfect fit.