mayerial:paper. colour:four colors. 1.before using this sticker,pls make the surface is clear,then press this sticker firmly on the articles.2. do not wash it .do dot twist it3.The best gift for kids and adults.4.collect them all and trade them with your froends5.Decorate your bike ,letters,scrapbooks,envelopes,lunch boxs.there is always something new ,collect them all and try them one by one.