NOT KNOWN FACTS ABOUT VIETNAM MOTORBIKE TOURS

Any remedies for two backpacks or if we suit all the things in a single, what to do with another backpack these 20 times - possibly doable to go away it from the rental motorbike household in Hanoi? And can even 1 backpack healthy with two of us on the bicycle haha? Many thanks Once more for finding the time to browse, Imagine and ideally reply :)V