The Astroman Long Sleeve Sun Shirt displays a lightweight, stretchy, and durable Astroman fabric, ideal for extended activities like rock climbing, hiking, paddling, and backpacking. AirVent technology on the back and UPF 30-50+ sun protection keep you cool and protected in the sun. Quick-drying material feels soft and comfortable, delivering the robustness needed for outdoor adventures. This top is the perfect piece for sunny outdoor activities, for optimal shade and chill. Men's Astroman Long Sleeve Sun Shirt