This is a fascinating invention that appears to serve no practical function.* The idea: collect rainwater, purify it in your raincoat, and store it to drink through a straw while walking in the rain. I think. As a water purifier, it sounds great. As a raincoat, awesome. But having the need for both at once is not a thing that’s happened to me, ever. Perhaps I’m in the wrong climate. What do you think?
(*Someday this statement will probably end up in the Bad Opinion Generator, but for now I’ll stand by it.)