The backing of the stickers is self-adhesive and adheres to all smooth surfaces, such as smartphone cases, jeans, canvas, plastic, metal, and much more. The Diamond Painting stickers are available in 6 packs with great designs. Pugs, sloths, llamas, smileys, fruits, peace signs, unicorns, or rainbows – there’s something for every taste. The technique is simple and quick to learn, making it a lot of fun for both children and adults. The Ursus Diamond Painting sticker sets each include 2 sticker sheets in 6 different designs, diamond stones, a crafting guide, and the necessary tools, such as a picker, tray, and wax adhesive.