Flip-flop design contest held in Kobe City, the birthplace of flip-flops.
The top three entries will be voted on by popular vote, and the top three entries will be merchandised and sold.
https://www.city.kobe.lg.jp/h53961/kuyakusho/nagataku/machizukuri/designcontest_beachsandal.html
flipflop was born in japan.tsukumo is the only factory in japan.