After noticing impact damage on our Roadster's rear fenders from stones kicked back by the front tires, we looked for a way to protect the paint without taking away from the look of the car. These Magnetic Stone Guards do just that and only take seconds to install or remove. They are made of durable black or silver magnetic vinyl and will not chip or peel. Don't worry, they have been tested at high speeds and when properly installed will not fly off!