Product details:

Writable body is clear so you can see through to text underneath Ultra-versatile: Margin-size body fits within margins of books, notebooks and printed documents without interfering with text Ultra-writable: Two-sided, paper-covered plastic tabs work with pens, pencils, markers and highlighters--smudge free* *Ink dry times may vary. Tab may lift some inks. Test before applying. Ultra-repositionable: Stick securely but remove easily