I used this bag for a study abroad in Europe and it saw a lot of action. It was perfect for carrying around my laptop (a very large Toshiba) as well as a notebook, thin textbook, camera and umbrella. Beyond that, it didn't fit too much else, but I was able to use it for a weekend trip and it fit three changes of clothes, several small souvenir items and toiletries, which was impressive. It's durable and if you purchase a darker color, dirt doesn't show so it looks good.
There is a useless leather strap on the side that is annoying because it will hit your legs as you walk, but you can easily remove it. The straps on the front of the back are fake but can easily be secured so they don't swing. Another bonus is that the bag zips shut but the flap also secures with velcro, so it makes it harder for pickpockets. There's also a zippered pocket on the inside and a zippered pocket on the outside back of the bag that are good for storing items you need to get to quickly or keep safe.
The strap is strong and firmly secured to the bag so I haven't run into any weight issues (other than my own physical limits) and the only downside is that the bag kind of collapses when you take things out. It gets floppy and hard to manage and if you're in a hurry, it can be a fit frustrating.
A normal sized macbook would fit perfectly, and a larger PC has a very high chance of fitting. My laptop is one of the larger, newer models and it fits with just the slightest hint of wiggle room. Overall, pleased with the purchase. It's not expensive, and it gets the job done.