This case is perfect to allow you to build your own every day carry (EDC) survival kit.  Big enough to fit the essentials in whilst still bieng small enough to easily carry at all times.
It is also a good case to keep all of your firestarting kit together.
It has a silicone seal with roll clips.  It is water resistant.  All long as you dont leave it completely submerged in water for a long period of time it will not leak.