This is the same "bag" I carried in the vehicle when I had a full time job in the big city with a 48 mile one-way commute. If I was forced to abandon my vehicle at work and walk home, it would have taken at least 2 days, probably 3. The bag is really a medium backpack with 3 days of survival food, 2 gallons of water, first aid kit, spare socks, a roll of toilet paper and tools necessary to ensure a safe return. We don't have earthquakes or raging wildfires, but we do have tornadoes. The potential for a major tornado to wreak havoc exists, so that is what I prepared for. I haven't changed out the bag, I just still recycle the food and water every month and put it in whatever vehicle I am in that day.