The Solarflex Plus Crew from Simms will certainly be your new best friend on those hot summer days on the water. This breathable long sleeve shirt is quick drying and moisture wicking, with technology so the only thing you'll smell is that cooler of fish. It offers UPF50 sun protection and has built-in thumb loops and articulated cuffs for added coverage. Quick-Drying, Moisture Wicking. Technology. UPF50. Articulated Cuff for Sun Protection. Built-In Thumb Loops. Sunglass Chamois Inside Bottom Hem. 100% Polyester .