There is a company that manufactures an Austin Powers range of fancy dress, one is called "Fat Bastard".
I have seen it in action. It is a battery powered inflatable costume, it has a fan unit on one side that inflates the outfit. The guy wearing it said
it was quite cool inside with the air circulating. I wonder if the Japanese got the idea from that outfit?
There are many companies selling it heres one
Fat Bastard
Cstume Online Shop Link. Click on the costume to see it in all its glory, I can't see the fan inthe pic myself. Might get one for summer....if
we ever have one here!!!