I purchased one extra baggage space for 5 euros but cannot find a reference to the size limit of the extra bag
Posted by
SE Pennsylvania
2662 posts
I don't know for certain, but bought a ticket for a Ouigo trip next month and paid the extra baggage fee. I assume that there would be mention if there were a size restriction:
https://faq.trainline.eu/article/209-facilities-luggage-trains-europe#ouigo
Posted by
Chicago
8166 posts
Any bag that one would normally have to checkin at the airport but designed that a solo person can handle.
Extra large suitcases for example. Ouigo does not specify the size they just call these voluminous, bulky like a those 28 inch 71cm in height kind.