When the day calls for us to be out in the sun all day, we reach for the Outdoor Research Astroman Air Sun Hoodie to beat the heat. Featuring a recycled polyester and spandex fabric, the Astroman Air Sun Hoodie is stretchy, moisture-wicking, and quick-drying, so we stay comfortable no matter what we are doing out in the sun. The half-zip design keeps us out in the sun for longer, and the half-zip construction and the laser-perforated ventilation holes on the side panels allow us to stay cool and comfortable while allowing our excess heat to escape.