National Cycle VStream+ Sport Touring Windscreen The VStream patented V shape pushes the wind vortex away from your head giving you a peaceful ride. Made from polycarbonate for greater impact strength, up to 23x more than acrylic, and coated with Quantum hard coat for extra scratch resistance. Features: Made from polycarbonate Quantum hard coated for 10x additional abrasion protection RainZip treatment applied to make rain and water bead up and blow away quickly Dramatically reduces wind noise while increasing rider comfort Adjustable vent included and preinstalled Superior clarity for outstanding optics Dimensions: 17.63 H x 13.88 W Note: Height is measured from the bottom center edge to top of screen.