The Kokuyo Super Clear Holder is a lightweight plastic file folder in lovely, subtle colors. Although thin, they are very strong due to Kokuyo's double-fold construction of the bottom edge. Sheets fit neatly all the way into the edges of the holder, so all your papers will look neatly organized. This A4 size holder holds all documents of A4 size or smaller, including letter size. Each holder also includes a blank index tab sticker for you to write on and adhere to the edge, so that you may easily identify the holder's contents.