I have a ve4y similar pack - it has been my edc & day hikes pack for 10 or more years.
It's very good, but if you put too much heavy shit in it, it will land on your ass, making hiking very uncomfortable due to lack of frame. Even if you put bundeshwehr sleeping pad for support. Pretty spacy though, I could fit a 10L water canister when I needed to carry water to my nearby garden.>>1435023
I honestly don't know how they count those litres, 10L keg is pretty big, all those small packs that say 20L, 30L... Maybe they count external pockets or something, sounds like huge lie to me.