Oh but I have. On the outside :)>40L
See bro, the problem is that we probably don't understand each other. Look:
I noticed retailers often exaggerate capacity of the rucks they sell.
The bacpack in here: >>1523320
the one I used for years - I actually know its capacity is little over 10L, because I literally haul 10L of water in it to my garden. Photography related.
Now let's look at this backpack - it's got frame and is said to have 35L capacity:https://allegro.pl/oferta/hi-tec-plecak-turystyczny-trekkingowy-aruba-35l-8121230871
It's slightly bigger than the khaki backpack, but there is no fucking way in hell I could fit 35L of shit inside it.
I see it all the time.
And I just checked - Alice medium is 65L. No way in hell.