These bumper stickers are printed on high quality vinyl paper with weather-resistant UV coating so your stickers can withstand the elements. This coating yields a tough, scratch resistant surface that is extremely durable.. Being made of high-quality waterproof and heat-resistant vinyl, Strong adhesive strength, the stickers will perfectly withstand any weather conditions of each season. Our eco-solvent Roland brand ink is industry leading! It etches deep into the vinyl and has UV inhibitors to make sure your graphic lasts outdoors!