evo.com | Outdoor Research Activewear Tees > The Outdoor Research Astroman Short Sleeve Sun Shirt is the brand's best-selling sun shirt for good reason. UPF protection teams up with movement-mirroring stretch to keep things cool and covered on any sun-soaked adventure. Regular Fit Center Back Length 73.7cm / 29.0in UPF 30 Hidden Snap Front Closure bluesign(R) approved 85% Recycled Nylon 15% Spandex | Outdoor Research Astroman Short Sleeve Sun Shirt Men's 2027 - Medium Khaki | Nylon/Spandex