Meet your new go-to layer for sun-drenched days on the trail, the rock, or the water. Named after the legendary climbing route in Yosemite Valley, the Outdoor Research Women's Astroman Short Sleeve Sun Shirt brings elite performance to your everyday adventures.

We know that staying cool and protected is the secret to going the distance when the sun is beating down. This shirt is built to handle the heat, combining feather-light comfort with serious UV defense. Whether you're hauling a pack up a steep incline, paddling across an exposed lake, or simply grabbing post-hike tacos, the Astroman keeps you shaded and dry. It’s so ridiculously lightweight, breathable, and soft next to your skin that you might just forget you're wearing a technical layer at all.