English Keyboard Overlays Stickers, Labels. White Transparent Characters for Black Color Keyboards. Made of Lexan Material and 3m Adhesive on the Reverse Side of Sticker Where the Letter Is Printed Never Come in Contact with Typist Fingers Preventing Fading Letters Transparent US English Keyboard Stickers The Overlay adhesive firmly attaches the overlay in place without damaging the keyboard keys These keyboard stickers are transparent with the character set displayed in a unoccupied corners. If desired, Overlays may be removed without causing damage to the original key