The Lenspen Fogklear demister cloth effectively protects against condensation, e.g. glasses, camera or telescope optics and other sensitive surfaces.

The 6x7 inch scarf is approx. It can be used successfully 200 times.

It is easy to use: you only need to wipe the surface to be protected for 10 seconds and you can forget about condensation for the whole day!
It does not dry out and fits in a small place (e.g. in a glasses case).