The RealWheels Aero-Clear wheel cover is made of a clear lexan material that is also used for producing clear snowplows, so it has been proven to be extremely durable and scratch resistant, the company says. The cover helps save money on fuel by solving aerodynamic problems, while allowing users to get creative with the various image or logo possibilities on the cover. They can be customized, allowing for up to a 12-in. logo to be printed on the wheel cover. The covers are aerodynamic, and removal is not required during inspection.