What does Studentenreisproduct mean?

With her studentenreisproduct she travelled to her parents for free that weekend.

Dutch student slang. This is a Dutch word. You will hear it a lot at Dutch universities, student associations and in student houses.

You apply for it through DUO. You choose free travel on weekdays or at weekends, with a discount the rest of the time. International students can sometimes get it too, depending on their situation. Worth checking. Also read what broke student means.