"Cave shoes" don't wear under 5 years old
The popular "hole shoes" in recent years are soft and easy to put on and off, but they are not suitable for children under 5 years old. Since last year, there have been frequent incidents in which children wear hole-strapped shoes and are injured by the elevator. The average is four or five per week in the summer. The Japanese government also warned consumers that children wearing hole shoes are easily pinched by elevators.
American elevator expert Lax said that the hole shoes are too soft, easy to deform, and easy to fall off the feet, so the child is easily caught by the elevator "tooth" when wearing. Children under the age of 5 are advised not to wear hole shoes when taking the elevator or going to the amusement park.