To transport only the case and its standard 18-55 I was looking for a compact bag that will protect the device in a backpack, briefcase, or carried by hand. This case has been very adapted to this need, and much cheaper than the Canon model! The shoulder strap can be passed through the cover, but taking a few seconds to fold it can also be left inside: this is what I do on my side. For cons, the material should not unduly protect water, it's pretty bad!