I wonder if these undies have been soiled by schoolgirls first before they were sent to the miners?
I get the feeling these superundies were probably only developed because the Japanese scientists who Googled for the original idea did so with a search for "wild stuff you can do with minors' undies," but making a spelling mistake because they don't understand proper Engrish, which allowed them to inadvertently save the Chileans miners' asses in the end. The proof in my assertion lies in them also sending candies.
I bet we'll soon see these things on sale in vending machines for sure.