Description of Outdoor Research Oasis Sombrero This hat keeps you cool under intense summer sunlight. The expansive brim creates personal shade and a wicking headband keeps perspiration in check. Features: SolarShield™ fabric with UPF 50+ Foam-stiffened brim floats Coolmax® mesh headband for comfort and moisture management External drawcord adjustment Removable chin cord with cordlock Avg. weight: 3.4 oz./96 g (size L)