There is a Traject Vrij abonnement voor internationale reizen (Traject Vrij season ticket for international travel), which gives you unlimited travel on a fixed route in the Netherlands to Hazeldonk border, Roosendaal border, Emmerich border and Bad Bentheim border and the stations Weener, Leer, Gronau, Emmerich-Elten, Emmerich Hbf., Emmerich Praest, Herzogenrath, Aachen West and Aachen Hbf.
A Traject Vrij voor internationale reizen is available via ns.nl. The product is loaded onto your personal OV-chipkaart.
You can buy a subscription for the connecting route abroad at the appropriate foreign railway company.