"Without a doubt this is a kick ass product"
Thats what the guy says in the video clip 7 mins long but it was interesting. Apparently the effect that the glasses gives dates back to the 19th century.
Also he said 99.99% of people will be able see the effect that the glasses give. Unlucky
if your one one of the 00.01% of the people who cant see the effect :-(
However i havnt used them but they look interesting.