The North Face Men's Kilowatt Short-Sleeve Shirt is a technically advanced training tee for running and working out. Its FlashDry XD fabric maximizes the shirt's ability to wick moisture and dry quicker than standard FlashDry fibers. There's a mesh panel running along the back to increase ventilation and overall breathability. The North Face shaped this shirt with underarm gussets to ensure freedom of movement whether you're sprinting or lifting.