Yeah for four people that's 3 days which is more preps than probably 90% of people have. The reviews pretty universally say that the bags are flimsy and leak.

I saw it at walmart just before this thread was created and I have to say it has gotten me kind of interested in getting into long term storage (20+ year type storage) of about 1-2 months worth of food and water for 4 people. Going to have to start looking into this.