vending machines can sell pantyhose for the woman on the go, and are in almost every metro around Santiago.
They're incredibly practical if you think about it. You leave the office for the metro, and realize you have a run in your stockings the day of a big meeting and don't want to look trashy, buy new panties! In the metro! Change at work. So smart, even thoughtful really.
They even suggest a kind of value for the Chilean professional woman. There must be a large enough population of working women for it to be profitable to have these at nearly every metro station.