The Proviz PixElite Crop Top features are pretty awesome:

• Offers light support levels – or can be worn as an outer top layer
• Breathable material
• Material designed to give impressive ventilation
• Sweat-wicking awesomeness– just what is needed when out running to help prevent chafing
• Strategically placed highly reflective PixElite performance material is incorporated throughout the crop to keep you visible in minimal light situations