A stationary bike is outfitted with a 3D printer attached to the back. The bike has a number four affixed near the handlebars. The printer is housed in a clear plastic casing with turquoise and white components. The bike is supported by a wooden plank placed under the rear wheel. It is positioned on a gray concrete floor within an exhibit space. Other bikes and display materials are visible in the background. The camera maintains a static position, providing a clear view of the unusual setup.