Feel at ease. The intelligent seams of the On Running Performance-T men's running t-shirt and the overall fit are designed to work with the movement of your body. No chafing. No distractions. It moves with you. Its lightweight and breathable fabric features DryTec™ technology, meaning it's not only breathable, but dries quickly, too. Furthermore, this t-shirt features reflective details for enhanced visibility on your evening runs. Ignite the human spirit through movement: that's the mission of ON community. Expect the best from your running gear.