This is Penco’s original green eraser. The distinctive retro sleeve design of kraft paper gives the impression of non-Japanese stationery. The feature is not only the design but also the comfortable erasability that is unique to Japan-made erasers. It is made of environmentally friendly phthalate-free materials. The erasers attached to the heads of mechanical pencils and lead pencils are helpful, but a simple box-shaped eraser can be a reassuring writing partner. Keep it as a regular item in your pen case to help you through.