Will you run a new personal record in the Aura shirt? The Dynacool fabric of which the shirt is made, causes the shirt to feel very comfortable while running. The fabric has a soft touch, that feels nice on the skin. The shirt is also breathable and lightweight, causing you to stay cool during running. on both sides of the shirt, you find reflecting accents. Because of this, the shirt is also perfect for running in the dark. You complete the look by combining the Aura shirt with the Aura short. And is it still a bit cold outside? Make sure you stay warm by combining the shirt with the matching Aura vest.