University of Illinois Illini Vented Fishing Shirt Short Sleeve Button Up Show your school spirit with this ProEdge button-up shirt featuring the University of Illinois logo. Perfect for casual or travel occasions, this lightweight and breathable shirt is made of machine washable polyester and features short sleeves and a collared neckline with a button-down style. The navy blue shirt is embroidered with the University of Illinois' team the Fighting Illini. 100% Polyester