Anyone have any familiarity with Loctote anti-theft bags? We vacationed a few weeks in Europe and many museums that we visited did not allow backpacks (plus I don't carry one during the day anyways while on vacation). I had a cheap draw-string bag that use for Yoga that I threw just a few basics in ie:a rain-jacket, camera, phone/charger, tickets, etc in and it worked nicely as it was permitted inside everywhere I went.

I had been looking for a more "professional" one, and came across the Loctote Anti-Theft Flack Sacks.