gilipollaswrote a review of Timbuk2 Hunchback Rack Trunk on October 28, 2015
Familiarity: I've used it several times
This is a great bag for commuting. I needed something to take a few small items, like a pair of shoes and/or lunch to work. I ride with a backpack, but it's been getting too full with other stuff lately, so I bought a simple rear rack and this.
I only wish I would have done it earlier. Moving the weight from my back to a lower position not only makes me more comfortable, it is more efficient (closer to the ground).
The bag is very high quality, like all Timbuk2 products, and well thought out. The inside is lined with a really durable TPU. I thought from the description that it would be like the inside of a lunchbag, but it's much more durable than that. Outside is waterproof, and the rolltop is nice, especially for keeping things dry.
There's a good assortment of pockets and things to keep your small items.
Size is great. Could easily carry a pair of shoes and lunch and some other small items. During the fall/winter, I'm carrying boots, which are bulky, but still fit with a good amount of room to spare.
Very highly recommended, this is just what I was looking for. Small, simple, and not a pannier!