These stickers are printed on durable, opaque and waterproof paper which makes them perfect for regular use, as well as for covering other stickers. The high-quality vinyl ensures there are no bubbles when applying the stickers. 100% hand painted- Original gouache painting. -Fast and easy bubble-free application - Durable waterproof, perfect for indoor and outdoor use - 95 density - 3x 2 inches Don't forget to clean the surface before applying the sticker.