Blistering mid-day heat has officially met its match with the Columbia Sportswear Men's Insight Ice Short Sleeve Crew. This crew takes active cooling to unthinkable new levels of chilly delight. Airflow is just the beginning. While built-in UPF 15 sun protection is shielding you from harmful rays, the Omni-Freeze ICE® advanced cooling technology uses your sweat to trigger a chemical reaction that actively lowers the temperature of the fabric, cooling you down in the process. Quick-wicking fabric ensures that you stay dry and comfortable by pulling moisture away from your skin and into the fabric (where ICE technology can do it's thing). Gusset detail provides maximum mobility.