We've dialed in everything adventurers love about the Astroman fabric and created a custom cut for women that takes into consideration backpack belts, hip-hugging harnesses, and pocket placements. Meet the Women's Astroman Sun Shirt: Our best-selling lightweight, stretchy, and durable fabric packed with the highest rating of UPF 50 sun protection. Named after the legendary route in Yosemite Valley, the Astroman was built for exposed and rugged climbs, but works equally as well for hiking, paddling, backpacking - even dressing up for an evening out to dinner after the adventure.