When relentless heat threatens to cut short a pleasant afternoon tossing carefree casts, arm yourself with cool comfort and keep chasing that elusive two-footer. Simms' SolarFlex 1/2 Zip Shirt features hard-working COR3 technology, with all-day odor-fighting and moisture-wicking protection. The shirt shields against the sun's harmful rays with a UPF 50 rating and a high-backed collar to protect your neck. Mesh panels on the sides and arms add breezy ventilation that will keep you feeling fresh on the water from dawn until dusk.