Magnets are weather-proof, and are strong enough to last on a car. These magnets have a UV-protective coating, which prevents fading in the sun. Magnets have a white paper hang tab attached to the back, perfect for displaying on a pegboard. Back of magnet also has a small branding sticker. If you would like your magnet to not include the hang tab, please send me a message and these can be removed! Magnet Measures: 2.79" x 2.82"