De Soto Men's Skin Cooler Sleeveless Base Layer

This is the coolest undershirt you will ever own! It is intended to be worn beneath your cycling jersey, but can just as effectively be worn alone as a tri top or running top, or even beneath a dress shirt for those scorching summer outdoor social events! Constructed of Skin CoolerTM Stretch, this proprietary moisture-radiating material actually offers a cooling effect by dissipating moisture with the slightest breeze caused by movement of the body. If you chose to wear it alone, this fabric blocks 75% of UVB rays.