Stickers are made of high-quality non-transparent vinyl, with strong adhesive,tear resistant, wear resistant, waterproof, to the touch. Ultra thin won't hurt the screen and made it easier for typing. and enlarged letters make the font more obvious. The keyboard letters of high-strength workers are easy to damage, and the keyboard stickers are good for replacement and supplement. Gives your Keyboard a fresh new look. By using this keyboard sticker you will help to reduce eye straining as the keyboard stickers make the keys easier to see. The stickers use an easy peel-and-stick method to install.They will not ooze adhesive, dry out, or damage the keyboard key.