Our Folding polycarbonate Lexan windshield is CNC machined using ¼ thick material. We test our windshields to be able to withstand open trailer hauling at hwy speeds. All hardware is stainless steel, aluminum and high quality nylon to provide long life free of corrosion. The Mammoth Designs windshield folds up from the bottom to allow air to flow. Velcro is used to raise and lower the bottom portion of the windshield. We offer additional protection when you choose the MR-10 Hard Coat Lexan option. Used by racers around the world in their cars, MR-10 Lexan is the same material with an added hard coating that helps to extend the life of your windshield and a must for anyone living in harsh sandy or dusty environments. All of our Lexan windshields are DOT certified. | Usually ships in 1-2 weeks