I needed something that can do double duty.  I ride motorcycles, so I wanted a small'ish pack & I hike for Geocaching, so I need to carry my stuff for that.
First thing I love is the quality.  Nice leather, strong stiching, (so far)  I love all the pockets for the multi things I need at various times.

It is not full size bag.  I read in one review, the size is misleading when not shown on a person.
I can fit 2 regular sized waterbottles, my wallet (small)  a full sized hairbrush & bulky keys easily in the main compartment with extra room.  With all that, I also used the compartments as well to fit additional things.  I am normally for everyday purses a tote kinda gal.  so I would never be able to fit all my "stuff" , but I don't use it for everyday, but that is just me.  You could use it daily if you don't carry alot with you.
I am thrilled I found this because it was exactly what I needed, & for the price!!!