This post is aimed at some of you gear hounds, like davebugg. I was curious about the new Osprey Pro 30L, and ordered it. It terms of utility as well as design and aesthetics, it is an impressive pack. In 2016 I carried a Gregory 40L and in 2018 a Gregory 36L, both fine packs. After packing the new Osprey Pro 30, I realized there was still plenty of room. So, out of curiosity I ordered the 20L version--everything I packed on the last Camino fit. Came in at 11 lbs. Here's a photo of the packed Osprey Pro 20L adjacent to a guitar to give you an idea of scale. If you would have told me five years ago that I would think a 20L is adequate, preferable actually, I would have said impossible. I imagine my contents are similar to most others with the exception of no sleeping bag.