There are many out there, most ar over priced and crappy. Do you really want to depend your life on some crappy stuff?

If you do, there are many links here on the forum search for it or google it. A quick search turned outthis There are many online stores that sell BOB's, usually under the name of emergency kit, 72 hours kit, etc.

If you got the time, you can so easily make one, on your own. Because you build it on your own, you will be more formiliar with the contents and it's abilities. Most items included can be found at you home already. IF done correctly you can be a kit cheaper and beter with the stuff you aleady got and thing you have to buy.