Rain Zip Rain RepellentNational Cycle RainZip Rain RepellentRide safer with a visor that stays clearer in rainy weather. RainZip is hydrophobic, meaning it repels water by beading it up and blows away with wind. Rain Zip is a rain repellent treatment that beads water on the windshield Once you are cruising the rain runs off the windshield so you can see through the shield It is formulated for Quantum hardcoded polycarbonate windshield but is also safe for all windshields