My previous bag was modulable and had many small pockets and zippers. I was constantly making efforts to adapt to the bag. I took me mental space.
With the Metro Backpack, I forget that packing is a thing. The bag is my silent ally and holds my stuff conveniently.
The quick access pocket holds my keys, papers, pen, tote bag and small accessories. Swiveling the bag around my body to access the pocket feels natural and great because the bag is so light and slick. The main compartment holds my water bottle, computer, bike accessories, and whatever life is throwing at me. I'm carrying it everyday through the city (walking, running, riding my bike), I don't even feel it anymore, it's become the prolongation of my body lol.
I'm 6.1ft (1m85) and have quite large shoulders and the dimensions are not too small for my size. I love the looks and quality (and the price) of the bag. 12L is not too small for my needs. The straps do slip a bit but it's not even a problem because they are so easy to adjust when wearing the bag : it's taking me 1 second and no thinking to adjust the straps length.
It's the perfect bag for me for many years to come as it deeply helps me carrying my stuff efficiently everyday.