SolarShield Construction: UPF 50+, Products with the UPF symbol are made of UV-resistant fabrics that protect the wearer from exposure to intense sunlight, and are constructed for maximum protection. Keep your noggin protected when you�re on the water or portaging to the next entry point. UPF 50+ protects you from intense sun while strategically placed vents and wicking fabric in the crown keep you cool and dry. Piping along the brim edge offers greater wind resistance when a summer storm brews unexpectedly.