Nice pack, pretty cheap, almost completely waterproof, good looking. Really nice minimalist pack. Even packs down to the size of the naglene so I can put it in my backpacking pack, get camp established, then go out and use this thing as a daypack. Straps are of much higher quality than a $50 pack should have. The cierzo comes across as an extremely simple pack, but it is much more functional than expected.. I am still amazed at how comfortable it is. I have taken this pack swimming for about 120 seconds and I received about a half inch of water at the bottom of the pack. A little dissapointing considering it seems like everything but the top would be completely waterproof, but hey, still better than having my entire pack filled with water like everyone else did.
I would say the only downside is no compression straps. I realize it would add to the weight and make the pack much more difficult to roll up, but still. If the pack is only half full or so stuff will just fly around, and the pack becomes fairly uncomfortable. Still more than I would expect from a $50 pack. The one complaint I have is EASILY outweighed by all the features. Great buy.