If you carry vitally important files on your USB drives, you need to stop risking the security of those documents by using the Corsair Survivor USB.
Made to protect files as well as store them, this memory stick is the most hardcore USB you will ever find. With aircraft grade aluminum casing, vibration and shock resistance, as well as water resistance up to 200 meters, you could go through a storm with this flash drive and still be able to access your documents when you get to dry land. The USB can hold up to 64GB of data and the 3.0 version loads data ten times faster than older versions.
For a heavy duty USB, you need the Corsair Survivor USB.