Hello JINHO
Thank you for your comment.
In principle, supersaver tickets cannot be canceled.
If you want travel later, you have to buy new tickets for the same trip. If you buy new tickets to full price (not supersaver tickets),we can then cancel your supersaver tickets with 10.- CHF fees pro ticket.
I advise you to contact our ticketshop to have more informations: ticketshop@sbb.ch /0848 030 030.
Kind regards,
CharlineB