Overall the bag is very durable, more spacious than it looks, and comfortable to carry around. The straps are put onto the bag on such a way that they stay firmly on your shoulders. One will not slip off when leaning or moving around.
So far I have been very happy with this little bag. I am a pretty short person (5ft) so I didn’t need the biggest bag to carry around. I, however, do need it to fit several things that the average person doesn’t carry around on a daily basis. Everyday I carry around an 8x8 sketchbook, a tin of colored pencils, a notebook, sunglasses (in a cushioned flat container) and a 17 oz water bottle. There is still plenty of space whenever I need to add something in. A recent trip to the zoo had me putting a small fujifilm camera into it (Lens removed and stored in the bag as well), a stick sunscreen, and a collasible uv umbrella.
My only negative for this bag would be due to how much I was sweating on said zoo trip (90F with some humidity) some of the finish rubbed on to my shirt. I was going to need to wash my shirt anyways so I am not too concerned about it. This might just be an issue due to how new the bag is, and once I use it more the finish will be less transferable.
Picture includes my iPad Air to show that one can fit in the bag.