Strength, weight, etc. are solidly satisfied.
I wish it was a shoulder strap a bit thicker and shoulders-friendly structure. It happened that my thing was emptied with the key of the person who possessed the same thing, I felt that it would be a merit and a demerit.
Even though we are locking with theft prevention at business trip destinations, I am sorry that I can not be relieved.
It is possible that there was the same key by chance.