The Proviz PixElite Crop Top's supportive and breathable material helps to give good ventilation and helps to wick moisture away from your skin ? just what is needed when out running. Strategically placed highly reflective PixElite performance material is incorporated in to the garment so if you are out in the early mornings or evenings when it is dark then you will clearly be seen when you are in a vehicle's headlights. This product can be used as an outer garment for racing or training as well as an under garment for support.