Okay kiddo, you know how some people need to leave their home country because it's not safe there for them? They might go to a different country and ask for help to stay there. Sometimes, if they are allowed to stay, they need to go to other places too, for different reasons like school or work or to see family.
Now, when they travel to these other places, they need something called a travel document. But they can't just get a regular passport like you and I would because they aren't from the country they are living in. Instead, they get a special document called a refugee travel document.
This document shows their picture, name, and other important information, just like a regular passport. But it also shows that they are a refugee and that they are allowed to travel between certain countries.
It's important because without this document, they might get stopped or turned away at the border of a different country. But with it, they can travel safely and easily when they need to.