I need to take a backpack with me that's literally wider than my body and about as tall as my torso and neck, it weighs around 15-20kg.
What I'm concerned about is roads that aren't so good or places where I might even need to go offroad (I don't know) as well as be essentially having less mobility and being wider.
I'm going to travel (mostly on my bicycle) through various countries, which includes central European countries as well as northern countries, including their northern parts (so northern Sweden for example).
I'm low on budget though, keep in mind, so it isn't going to be something super fancy. Do you think a trailer will be my best option, and if not, what kind of attachment is?