Casio site : "Stand out from the crowd. Personalize your Graphing Calculator with a vinyl adhesive cover. This skin has been designed to perfectly fit the unique contour of the fx-9860G Slim. The cover can be applied easily and fast, and can be removed with little or no adhesive residue. Tthe vinyl skin provides a thin protective membrane, buffering your calculator cover from occasional scuffs and scrapes of every day use. Have fun with this great accessory"