Windshields are made from impact resistant Plexiglas acrylic to prevent dangerous shattering and potential injury. (70% Impact Modified, 30% acrylic) .1875 inch thick. Acrylic is non-yellowing, non-crazing and UV resistant. Fast and easy installation. Clean windshield using mild soap in clean water, rinse with clean water, then dry with a soft cotton towel. Never use Windex.