Incase it happens.
Travel anywhere, save your life in a bag. All the needs to survive in an emergency situation when out on vacation, weekends get aways or to supplement your kits while out on an Op. Fire, water, signaling, nav, a place to keep your phone safe from water, and a lot more space to add gear if you wish. I got one to check it out and ordering more for everyone in my family to keep on them.