The Fast Wing Tee takes technical features to the next level, with large mesh panels and 1/2 zip for ventilation, silicone print on the shoulders to keep a pack in place, and back pockets for gels or small items. A combination of advanced fabrics, strategic vent panels, and half zip enable instant cooling. Flatlock seams throughout prevent irritation. Reflective branding enables visibility day or night. Material: Polyester.