Sport-Tek® - 1/2-zip Wind Shirt. JST75. * 100% polyester shell * Jersey lining with mesh insets at gussets for added breathability * Colorblock accents at shoulders * Set-in sleeves * Articulated elbows for greater mobility * Half elastic, half self-fabric cuffs for comfort * Left side seam zipper for easy on/off * Side pockets * Drawcord hem with toggle Adult Sizes: XS-6XL