FlixBus is a long distance bus operator connecting cities and towns throughout Europe. Since the end of the railroad monopoly and the privatization of the intercity bus market in Germany, FlixBus has been offering modern mobility at excellent prices. 

Thanks to your ESN card you can have 2 vouchers of the value of €3 for 2015 trips and 2 vouchers of the value of €3 for trips in 2016!

How to do it? 

-Go on www.esncard.org and login with your ESNcard number

-Once you're logged, go here

-Look for the voucher section (top right) -> 

-Claim your Voucher!