Chad Schneiderwrote a review of Timbuk2 Classic Messenger Bag on February 6, 2008
This bag is awesome. Even with just a flap cover, it's always been completely rain-proof through the most drenching downpours, and I've never waterproofed it. It's got plenty of room, doesn't get road-rash (unlike myself), and dirt seems to wash out pretty well. I use it for for bike commuting, and it's very comfortable and the chest-strap makes it very stable when weaving through city-traffic. It's also easy to access and adjust without taking it off your back. Make sure you get colors you LOVE because it will be around for decades. Mine is 12 years old, and it's almost as good as new. By the way, it's designed for right-handers, and although it's definitely usable for a lefty, adjustment of the main shoulder-strap is difficult/impossible. You can reverse the chest-strap-stabilizer, but Timbuk2 has to reverse the shoulder-strap-latch location, and you'd have to buy a custom bag direct to do that.