100% Nylon Made of protective micro-fiber features in 100 SPF 50 to prevent sun burn. Mesh on both sides design, great ventilated to keep you cool in summer. Moisture-dispersing sweatband with adjustable drawstring, windproof, breathable, quick-drying. This hat can be used as a Fishing hat, Sun Protection hat, Gardening hat, Safari hat, Boating hat, Travel hat, Hiking hat, Hunting hat, and Outdoor hat.100% Nylon Windproof, breathable