The Lenspen Pro is ideal for cleaning all glass and plastic lenses as it has a soft, circular pad on one end for smudges and a brush on the other for larger dust particals. The brush slides into the body of the pen, so when not in use, it is kept clean and the cap fits on the other end to protect the circular pad when not in use. Great to carry around in a pocket, as the pen clip fastens to an inside pocket and keeps it safe.