Columbia Insight Ice Short Sleeved Tee If only all your running buddies were as cool as this temperature-regulating, super-ventilated v-neck. Airflow is just the beginning. Strategic venting teams up with deftly placed blocks of pointelle mesh for maximum breathability where you need it most. While built-in UPF 50 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. Antimicrobial treatment ensures that this top stays fresh and clean through the rigors of your toughest training plans. FEATURES: Fabric:91% polyester/9% elastane Freezer Ice jersey, 100% polyester pointelle mesh Omni-Freeze ICE advanced cooling Omni-Shade UPF 50 sun protection Omni-Wick 4-way comfort stretch Vented Antimicrobial Center back length: 26"