My first Pacsafe backpack
The locking mechanisms are great. The size doesn't really work for me in most cases, because the side pockets when in use take away space from the interior, which is frustrating. It would help to have more flexible side pockets. I still use it sometimes, but it is not an actual 15L, if you use the pockets. It is okay for a daypack in the city. Doesn't fit larger laptops, so if you get one from an employer (not your choice of size) this probably won't be your work bag.