◎ Waterproof Stickers The second image compares the sticker to an iPhone X (138 x 65). You can apply it without problems to flat surfaces such as guitars, skateboards, helmets, and laptops. You can also put it inside a clear smartphone case. ◎ We also offer combined purchases with other products. 2 for 800 yen, 3 for 1000 yen, and then an additional 300 yen per sticker. If you want to buy multiple items, please comment first and I will create a dedicated page for you. Alternatively, you can request a combined purchase. In that case, please provide the product numbers. Shipping will be via mini-letter (no tracking).