2XU's commitment to zoning the body with outstanding performance fabrics continues into the web of this essential micro climate Orix Vest. Updated with a hidden back pocket, side stretch panels for added support, and inner Extreme Mesh sleeve panels for extra ventilation, this popular lightweight jacket represents refined cool climate engineering. Shoulder air vents and a wind/rain resistant Vapor front panel facilitate maximum air flow while stretch SMD Thermo fabric manages moisture and reflective trims assure safety