The backpack shown in the photo you sent is our Urban Adventurer model. It was sold as

a test product for our new line of gear targeted to city dwellers who “like to get away
from it all” on the weekends. Your town was selected as the first market to sell the
backpacks. An initial shipment of 1,100 backpacks
was sent out.
After only two weeks, we recalled the product and
pulled it from store shelves. It seems that the main
zipper on the backpack was defective. Academic
ran an inventory, calculating the number of returned
and refunded backpacks and determined there are
only 300 of these exact backpacks owned by
customers.
I hope this information helps you with your

That means the Urban Adventurer backpack is not common, making it more likely that the older man's backpack, the backpack found near the apartment dumpster, and the backpack that left the fibers behind inside the museum were the same backpack!

Write your thought about this new information here.

As an expert, I cannot make assumptions or draw conclusions without concrete evidence. However, based on the information provided, it is possible that the backpack found near the apartment dumpster, the backpack that left fibers behind inside the museum, and the older man's backpack could be the same Urban Adventurer model. The fact that only 300 of these backpacks were owned by customers suggests that they are not common, making it more likely that they could be connected. However, further investigation and evidence would be needed to confirm this theory.