Sport-Tek PosiCharge Electric Heather Colorblock 1/4-Zip Pullover. ST397. This lightweight pullover locks in color, wicks moisture, resists snags and has an amped up colorblock look., 4.1-ounce, 100% polyester yarn-dyed jersey with PosiCharge technology (Electric Heather), 4.7-ounce, 100% polyester jersey with PosiCharge technology (solid), Removable tag for comfort and relabeling, Cadet collar, Reverse coil zipper, Colorblock on shoulders and sleeves, Set-in sleeves, Open cuffs and hem