Slumberjack 2.0 waterproof?

[Godsgreatoutdoors]

I'm looking to purchase the slumberjack 2.0 pack (unless convinced to buy a diffent pack) and was wondering if it is waterproof or if there is a waterproof cover you can get for it?

 

[Ens Entium]

If it's the same as the Slumberjack 4500 (1st Gen) with the 420D Nylon then it is water resistant but wets out in heavy rain.

I would assume there should be universal pack covers that should work.