It appears that we here in America need larger and larger (and hidden) alcohol. And we need it piped into our mouths. Meet Hydrosatch. 50oz of liquid can be held in this backpack meets messenger bag.
The bag also has what they call “sleeves” to hold other items so even when you have sucked all the contents out, you can still carry more cans if you want.
Not for me, but I am not Mr. Active, so not the target market am I.