Bumper sticker

A bumper sticker is an adhesive label or sticker designed to be attached to the rear of a car or truck, often on the bumper. They are commonly sized at around 25.4 cm by 7.6 cm (10 in by 3 in) and are typically made of PVC.

Bumper stickers serve various purposes, including personal expression, promotion, humor, or political activism. They encompass commercial, religious, secular, military, and sports-related themes, allowing individuals to showcase affiliations or support for various causes, regions, or groups. While they are widely used in the United States to display political support during elections, their prevalence is comparatively lower in countries like the United Kingdom.

Before the emergence of bumper stickers, advertising took various forms, including horsefly nets, metal or cardboard bumper signs, and window shield decals. The advancement of fluorescent inks during World War II and the accessibility of pressure-sensitive and adhesive materials in the post-war period played a significant role in the development and widespread adoption of bumper stickers.