Outdoor Research created a custom cut for women that takes into consideration backpack belts, hip-hugging harnesses, and pocket placements. The Astroman Sun Shirt is OR's 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.