Waterproof Stickers The second image compares the sticker to an iPhone 8 (138x65). You can apply these stickers without issue to flat surfaces like guitars, skateboards, bags, notebooks, etc. They can also be placed inside phone cases. We also offer sets with other products. 2 for 800 yen, 3 for 1000 yen, and each additional sticker is +300 yen. If you'd like a set, please comment first and we'll create a dedicated page for you. Alternatively, you can request a set purchase, and if you do, please calculate the discount when you apply.