National Cycle VStream Windshield For Harley Road Glide The patented V shape is designed to push the wind vortex away from your head giving you a comfortable and quiet riding environment. Made from polycarbonate and is 23x stronger than acrylic. The outside is coated in Quantum that has a scratch resistance 10x better than FMR coating. Features: 4.5mm thick Quantum hardcoated scratch resistance 10x better than FMR coating Center screen height is from the bottom center edge to top of screen Uses OEM hardware and stock mounting points Dramatically reduces wind noise while increasing rider comfort