This pack is excellent. The suspension makes it hands down the most comfortable pack I've ever used. I was kind of skeptical of it at first and thought it might be a gimmick, but it really delivers. The difference is astounding. I bought it as a daypack, but I've actually used it more as an overnight and multi-day pack. It can fit a ton of stuff for a "daypack". The two side pockets can hold 1L nalgenes with no problem. The stretchy material on the sides so far appears to be far more durable than the more traditional mesh other pack makers use. The backpocket can hold a ton of stuff, too.