Sport-Tek® - Dri Mesh? Sport Shirt. K469 Special double poly mesh offers the driest moisture-wicking protection. There is no sacrificing style for top level performance, though. Dri Mesh has a crisp feel and wonderful drape. Fabric/Style: 3.5-ounce, 100% poly double mesh; double-needle stitching on armholes, shoulders and bottom hem, flat knit collar, hemmed sleeve, side vents and 3-button placket. Adult sizes: XS-4XL