Sport-Tek PosiCharge Micro-Mesh Polo. ST680PosiCharge technology helps preserve colors and logos in a mesh that wicks moisture, resists snags and controls odors., 4-ounce, 100% polyester double mesh with PosiCharge technology, Partially made from recycled coffee grounds, Contrast neck taping, Tag-free label, Flat knit collar, 3-button placket with dyed-to-match buttons, Triple-needle yoke and armholes, Set-in, open hem sleeves, Side vents