Drink
The water bottle is a good slim option, keeps my water bag nicely on my back, I had been looking for such a bag for a long time. I can also store other stuff if needed, there is a separate pocket for it! (Viktor N.)
Holds the water bag well on the back, doesn't spread too much. I like the design that opens at the bottom, so I can quickly refill my water when I'm on the move. (Christian V.)
It can also be used as a small backpack, so you can stow a lot of stuff in it if needed. (Kristjan P.)