Lightweight, Breathable, Stretchy UPF 30-50 Protection

Named after the legendary route in Yosemite Valley, the Astroman S/S Sun Shirt features our best-selling lightweight, stretchy, and durable Astroman fabric for long days on the wall, hiking, paddling, and backpacking.AirVent technology on the back yoke allows superb airflow and breathability, and built-in UPF 30-50 sun protection protects skin from harmful UV rays. The Astroman's lightweight, quick-drying fabric is soft next to the skin and delivers the durability required for active outdoor pursuits.For sunny day outdoor activities where staying shaded and cool is critical, the Astroman S/S Sun Shirt is an elite performance top.