Here's what other sites are saying:
Don't let that heat wave stop you from getting out and going for a run--slip into the Columbia Men's Freeze Degree II 1/2-Zip Long-Sleeve Shirt next time the sun's out. Built with Columbia's Omni-Freeze Zero stretch jersey, blue rings in the fabric react with your sweat to lower the temperature of the material. And with the front ventilation zipper and Omni-wick evap pinhole mesh paneling you'll be able to ditch heat and moisture so you won't start to feel like a swamp donkey. Omni-shade and an antimicrobial treatment offer some extra protection from the sun and odors.
- Backcountry.com refers to the men's version