We made our Perla Packable Wide Brim Hat from a revolutionary polyester straw that offers the look of natural fiber and the durability of iron. Roll it, fold it, crush it, stow it - this beach hat is virtually indestructible. COOLIBAR SUN PROTECTION: Leading Sun Protection Company worldwide, guarantees UPF 50+ apparel blocking 98% of UVA and UVB rays. DERMATOLOGIST ENDORSED: First company honored with the Skin Cancer Foundation Seal of Recommendation and trusted by top dermatologists FEATURES: Internal sweatband for comfort and a snug fit and crown lining for maximum sun protection, Wide 4 inch brim, Approx. circumference: 22 1/2 inches, Spot clean, Imported RECOMMENDED FOR: everyday leisure, around the patio, around town or just hanging around, walking the dog, gardening or light yard work NOT RECOMMENDED FOR: swimming, not chlorine and salt water resistant or water repellent