I've been looking for a pack that is light/ultralight (less than ~2.5 lbs), is big enough for at least 2-3 day trips using ultralight gear, compact enough to use as a daypack on any mountain day hikes, and that I can remove the hip belt on so that I don't look like I'm going to pitch a tent in the middle of the airport if I take it traveling. The closest thing I've found is this: http://www.basegear.com/north-face-casimir-36.html I'm worried that 36L might be too small, and it's hard to find this pack at resellers. Are there any other suggestions? Is 36L a good size for this? EDIT: Also hoping to find something that's reasonably priced <$200.