Nice looking backpack. Not too big, not too small. The material is thick and substantial and I like the multiple pockets on the sides.
A few negatives:
I wish the inner lining were sewn into the seams. It is a thick fabric and hangs loose inside, which makes it get in the way when trying to get things in or out and sticks in the zippers. Ive had things fall out of the side zip pockets because the lining turns itself inside out. The main section looks small because the lining is taking up all the space. I put in a few stitches at the corners and hopefully that helps.
I also wish the zippers zipped down to close instead of upwards. Too easy to open with just a tug, then hard to close back up.
The two slip pockets inside are impossible to use because of the angle of the main opening. I would rather they put in a zip pocket instead.