My bag weighs 35 lbs. It's two weeks of food for two people, 3 litres of water and a bunch of stuff like a radio, flashlight, water purification kit etc.

Here's a write-up I did on the extended set, including camping gear, dutch oven, etc. It's not all part of the go bag. https://blog.tomasino.org/zombie-survival-kit.html

It's about 30-35lbs. It's kind of shaped like a bowling bag. It's not designed to strap on my back and go hiking, but to toss in the car. The MREs are pretty tiny and last about 5 years. We refresh them every now and again. Peace of mind doesn't cost all that much.