With X-VENT fabric technology, the Aero Tank combines a double-knit sweat-wicking body and lightweight breathable mesh back to keep you dry and cool so you can perform in comfort. STAY COOL Lightweight mesh back panel engineered to enhance breathability and ventilation QUICK-DRYING Double-knit contructed main panel leverages an inner layer to transport sweat away from skin and an outer layer to disperse moisture on surface, delivering rapid moisture management BE SEEN Reflective logos and trims on front, arms and back provide 360-degree visibility in low-light conditions FABRIC COMPOSITION: Main: 100% POLYESTER, Mesh: 100% POLYESTER