Not only are these stickers funny and cool looking, they’re strong. I dropped 2 of them outside of my house on accident and didn’t see them for 2+ days. I had written on one of them witv2 different pens. The permant marker had filled a little while the regular ink washed off completely but both stickers were completely intact and useable. I live in Portland, OR and it had been raining heavy the whole time themb stickers were outside. It didn’t matter. They both completely still work and I even got to redo the one I had written on. Great stickers. I highly recommend