3" X 11" Back to Back World War Champs Bumper Sticker 3" X 11" Back to Back World War Champs Bumper Sticker MADE IN USA Made from durable vinyl with a strong adhesive back. Printed with water-resistant ink that wont fade or run. Make your car a reflection of you! Get your point across with this quality bumper sticker that will outlast heavy rain, intense sunlight, and the most severe of traffic jams.