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. The Astroman Sun Shirt is 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.