Sorted 22l to 28l waterproof backpack

[AdvGramps]

I'm looking for a waterproof 22l to 28l backpack e.g. The North Face, Kriega, Evoc, etc preferably with the ability to have a hydration bladder in it.
Let me know what you have, must be in good condition.
I'm based in Centurion
Thanks, Mark