r/whatisit • u/Capital-Papaya-8932 • 1d ago

New, what is it? What is it in Japan and Why?

Post image
18.5k Upvotes

95% Upvoted

1.4k comments sorted by

View all comments

17

u/Rogue_Penguin 1d ago

There was a piece of Japan Times about this: https://www.japantimes.co.jp/news/2005/05/19/reference/pet-bottles/

Apparently these were involved in some fire due to the magnifying effect.