Jason Sillswrote a review of Timbuk2 Especial Medio 30L Laptop Backpack on June 5, 2018
Familiarity: I've put it through the wringer
I have to say that I was skeptical after the first couple of rides. However, as time went on it really grew on me and now I couldn't be happier. I've found that the size is really perfect for me. I use it for holding some basic bike gear (lock, etc), laptop, coffee thermos, and an extra pair of shoes. Everything fits, but the shoes make it a little tight. I've not been in a downpour yet, but the rain I've been in was no problem. The only flaw is the location of the thermos holder and the fact that the holder cannot tighten. After a couple of rides I feel that it is fully broken in and is quite comfortable for my daily ride.