I saw a magazine ad Roots not long ago and fell madly in love with their Omer Leather Backpack.
The worst part is that I saw the brown leather version, which is what I would prefer, but it appears to be sold out.
That and they range from $318 - $418 in price which makes them pretty steep for a backpack. They are lovely though.
If you love these, go to the Roots website and check out all the other amazing leather products they have.