Let me just start with the fact that I LOVE Osprey packs. They are so versatile and well made.
It's meant for hiking as a daypack, but I use it as my primary pack when I'm out and about (instead of a purse). I've used this backpack daily for about 4 months and love it.
The two top pockets are perfect for stashing things that I need quick access to. The mesh ventilation makes sure that I never have a sweaty back. The padding on the straps makes it comfortable to wear, plus the hipbelt helps take the weight off my shoulders. This pack feels like the perfect size for my frame.
I'm only giving it 4 stars instead of 5 because the main pocket is awkwardly shaped due to the frame that provides the mesh ventilation. It's not that big of an issue and I've been fine with it, but it makes maximizing use of space kind of hard.