Bubble shields from the plastic industry's glory days in the '60s were an instant hit with the hip chopper crowd, and have remained a popular safe-riding essential in modern times, thanks to advancements in polycarbonate technology and mold-making. Biltwell bubble shields are a snap to install, if you start with the center snap and move outward. To clean your shield, use mild soapy water solution and a microfiber cloth to loosen bugs and road debris, then dry it with a second clean microfiber towel. Never use harsh household or petroleum-based chemicals to clean your bubble shield, especially on the inside, as they can destroy the shield's special coatings.