303 Aerospace Protectant was originally engineered for aerospace and aviation applications, it’s a premium surface treatment that instantly beautifies and provides superior protection against harmful UV rays. Great for use on colored gel-coat fiberglass, inflatable boats, vinyl, clear vinyl (isinglass) windows, rubber plastics and leather. Easy to use, spray-on and wipe dry. Treated surfaces repel dirt, soiling, staining, water spots, salt water and mildew.