
A Bug Out Bag, (also called a BOB, Get Out of Dodge Bag, GOOD, or 72 Hour Bag) is usually designed to get you out of an emergency situation and allow you to survive self-contained for up to 3 days. A lot of people plan their Bug Out Bag to sustain them for much longer than that, but there is always a limit to what you can carry on your back and a 3 day target is a good place to start.
This MeetUp will give you the basics of building your B.O.B.