Great bag. Fit's my 14" Razer Blade laptop with slip cover on nicely. As others have said it doesn't stand upright which is kinda annoying at times. The zip on the side could be bigger to fit an umbrella. Otherwise, the bag is the perfect size and has all the pockets I need.
A great bag - superb build quality and well thought out design features. As others have noted, its one drawback is the fact that it topples over when the Laptop is in its slot - but once you understand that, it isn't a problem.
I'm very picky about my backpack but this one has been a winner so far. It feels decently made, there's a pocket for everything and above all it's genuinely slim (which I guess is why it falls over as per the other reviews!). Great bag.