My bike bag I got for free in Hainan finally fell apart. I wanted something that would not fall apart, would maintain its appearance, and was not too heavy. I would think that those requirements would be easy to meet, given the number of places that sell bags, but I was wrong.
It wasn’t until I went to Muji that I found such a bag with a price that was reasonable. It will barely fit the 17” Macbook, should I choose to get that in the future.