I used this pack for a 10-day trip to Germany. I felt that my personal items were very secure. The fabric is supposed to be slash proof. I assume it is , but I can't say for sure, as no one tried to slash my bag (thankfully!) This pack has 2 compartments: the main compartment and a front pocket. Both compartments zip up to close. When closed, the zipper pulls (which are some type of metal wire) can be clipped to the bag. This would make it VERY difficult for someone to unzip your bag without you knowing. Also, when closed, the zippers are hidden (under fabric or mesh), so presumably a would-be-thief wouldn't see them right away. After you zip/close the main compartment, there are 2 straps that can be closed over the zipper on each side, so even if a thief began to unzip this bag, the straps would stop the zipper's progress. There is also a chest strap that you can close so no one can pull this pack off of your body. There are 2 outside mesh pockets on each side of the pack for water bottles, etc. This was very convenient. The shoulder straps and chest strap can be adjusted.

The main thing I did not like about this bag is that there are no additional inside compartments. It would be nice to have at least one or two separate pockets inside the main body of this bag. Most "normal" or "regular" backpacks have this. Without one, everything is jumbled together inside the bag (wallet, camera, hair brush, umbrella, maps, travel books, flyers, passports, chapstick, sunscreen, first-aide kit, etc.) This makes it unnecessarily difficult to find things. Another negative is that if you want to "clip" the main compartment zipper for safety, it can only be done at the bottom of one side of the pack. It would be a nice added feature to be able to clip the zipper pulls at the top center of the bag and at the other side, as well.

This back pack was smaller than I had thought (It is smaller than the average school backpack) - but it is a good travel size for travel.

Overall, I am happy with my purchase. I would have liked some additional internal pockets, but it was OK as it is. This back pack was lightweight. The black color is nondescript. I recommend this bag, although there might be a better model available.