Frank D.wrote a review of Timbuk2 Especial Medio 30L Laptop Backpack on April 1, 2015
Familiarity: I've used it several times
I purchased this bag specifically for commuting. My commute is not excessively long, and we don't typically get lots of rain. I just figured that a $1500 laptop deserves a good quality bag. This bag does the job superbly, it's got quality construction, water proofing, and attention to detail (such as the small key pouch on the side, and velcro to keep the straps from flapping in the wind). I have also found it to function well just for hauling my gear around when I'm not on my bike. The padding on the back and shoulders breaths VERY well, reducing back sweat. Plenty of storage for all of your junk, boat loads of pouches, and reflective panels make it excellent for my commute. Very happy with product, and of course Competitive Cyclist for quick shipping. I haven't been through rain with it yet, so can't speak to its water proofing, but if I had to guess based on construction, it should perform just fine.