Everyday UPF Versatility, Trail-Ready Performance The Eclipse Sun Long Sleeve Tee is built for life outdoors, whether you’re hiking or backpacking on sunbaked trails, working your favorite boulder problem, or loading up gear for your big weekend plans. Made with bluesign® approved fabric, this lightweight, breathable polyester blend delivers UPF 50+ sun protection and ActiveFresh™ odor control for multi-day wear. The chafe-free design and dynamic reach construction move with you, while bonded neckline and a straight hem create a clean, comfortable fit that layers easily or looks great on its own.