A 72-hour kit, also known as a "bug out bag" or "go bag" , is usually in the form of a bag, backpack, or hard container. It typically contains emergency essential supplies such as first aid kits, flashlights, rain ponchos, flares, pocket knives, water filters or water treatment kits, and various other tools. In the event that you have to leave your home due to a natural disaster or civil unrest, having a 72-hour kit that you can grab on your way out the door or keep in the trunk of your car will ensure that you will have what you need for self-sufficiency until the emergency ends or you get to a safer location.