ULTIMATE COOLING Mesh ventilation zones are engineered into the chest and back, keeping you cool where you need it the most. LIGHTWEIGHT Super lightweight X-LITE fabric with clean cut silicone flocked finish uses a puffed construction for a near-weightless performance. QUICK-DRYING High-filament polyester yarn provides rapid moisture dispersal to keep you cool and dry. BE SEEN Reflective logos and trims provide 360-degree visibility in low-light conditions.