A model presents a creation during the 50th International Shoe and Accesories Fashion Fair (Francal), in Sao Paulo, Brazil, on July 17, 2018. The 50th "Francal" fair takes place from July 16 to 19. (Xinhua/Rahel Patrasso)

Visitors and traders take part in the 50th International Shoe and Accesories Fashion Fair (Francal), in Sao Paulo, Brazil, on July 17, 2018. The 50th "Francal" fair takes place from July 16 to 19. (Xinhua/Rahel Patrasso)

A model presents a creation during the 50th International Shoe and Accesories Fashion Fair (Francal), in Sao Paulo, Brazil, on July 17, 2018. The 50th "Francal" fair takes place from July 16 to 19. (Xinhua/Rahel Patrasso)