Fjallraven highcoast 24. Carry on size, holds a decent amount and is sized to the straps, so it doesn't tend to get over weighted. Unlike many other packs in its category, its not uncomfortable to carry if its only got a few things in it. I find may packs get weirdly saggy, curl up, or have compression straps that are not useful 90% of the time. Their version of waxed cotton, and while I've never done a major hike though the rain with it, I have not had any water problems with it overall, though I tend to keep my EDC stuff pretty water resistant anyway. Good closure, don't have to undo a lot to get it open. Good size, simple, durable.