Columbia Sportswear Solar Polar 1/2 Zip T-Shirt

The three-pronged defense protects you against overheating, harmful UV rays and vibe-destroying perspiration. First, quick-wicking fabric pulls moisture away from your body, leaving you cool and dry. Then, Omni-Freeze ICE advanced cooling technology takes over to cool you down; it's activated by moisture so it actually gets colder when your sweat hits the fabric, creating a cooling sensation that you can feel all over. Finally, our strongest built-in sun protection works non-stop to repel harmful UV rays. Strategic ventilation and thumbholes combine to take the comfort factor even further.