What Our Gearhead(R) Experts Are Saying:"I've worn this on full-sun trail days, and it handles heat way better than I expected. It dries fast, breathes incredibly well, and the UPF protection means I don't have to rely so heavily on sunscreen. It's an easy shirt to trust when the sun gets intense."Bright trail days feel more manageable in the Patagonia Cap Cool Sun Long-Sleeve Shirt. Made from a lightweight, recycled polyester jersey, it wicks moisture quickly and keeps air moving as temperatures rise. The soft, stretchy knit helps us stay comfortable whether we're hiking exposed ridgelines, paddling along calm water, or simply spending long hours outside in warm weather. With UPF 40+ protection built directly into the fabric, the shirt adds dependable coverage on sunny outings without feeling heavy or restrictive. The smooth finish works well on its own or layered over a tank, and the long sleeves give us confidence when the sun lingers overhead. Designed for breathability, comfort, and all-day use, the Cap Cool Sun Long-Sleeve Shirt becomes a reliable choice for any adventure that starts with clear skies.