Ninety degrees on a Los Roques bonefish flat can be an abrasive environment when it comes to sensitive skin. The SunTech Shirt delivers armor against adverse elements thanks to Simms’ exclusive COR3 finish with a UV-killing UPF rating of 50. This lightweight, long-sleeved crew neck provides made-in-the-shade comfort with flat-seam construction, a longer tail for added coverage when rowing, and the stowaway convenience of a welded chest pocket.