Cellophane highlighters are a new type of highlighter designed to make it easier to highlight important parts of a document. They are thin, rectangular, and have a transparent plastic casing. They are translucent, so they won't cover up the text. They are a great option for highlighting in both books and documents. These cellophane highlighters are made of a thin, translucent, plastic material that makes it easy to see the text that is being highlighted. They are rectangular in shape and come in a variety of colors. The transparent casing will not cover up the text, making it easy to see the words that are being highlighted.