we spent 1,5 days in Managua (Centro Comercial and Metrocentro mall) looking for travel-backpacks, because the airline lost ours a week before and we needed sth for the new clothes and stuff. But no chance.
Before we were in Granada and Maysay and asked locals EVERYWHERE, but they told us, that it's nearly impossible to get backpacks bigger than 40l.
So we ended up buying 2x 35l backpacks in Metrocentro Mall, which were not really cheap (around USD 150 each), but at least quite good quality.
10

shilf
Pro tip