Invented by Lubor Fiedler, the Lubor Lens is a fantastic optical illusion.

Your friend holds a pen (Not included) on their open palm as you hold a clear “Credit Card Protector” just above the pen.

You show a bizarre optical illusion…and give the plastic lens a twist. The center of the pen suddenly becomes TRANSPARENT…and then completely INVISIBLE! She can even see right through her spread fingers where the center of the pen was a moment ago! Another twist of the lens and the missing pen center suddenly becomes VISIBLE AGAIN!