This sticker was designed in collaboration with Anna Kiderlen, a good friend of mine and illustrator. She painted this motif in watercolor on paper, and I did the digital post-processing. 
 
The sticker has a protective coating, which makes the sticker even more durable. You  You can also stick these stickers wonderfully on your cell phone or laptop without  that they start to fade after just a few days or weeks, or the print becomes stained.