This extremely durable waterproof case was developed with the help of EMS professionals. Fire rescue personnel tested the first prototype in real life situations where it was subjected to rough handling. Their feedback enabled us to design a case that is both ergonomic and virtually unbreakable. In addition, we tested the case by loading it with 40 pounds of content. Then we had a strong employee throw it upward as high as he could, estimated at around 10 feet high, and it landed on our concrete floor. This test was performed several times, and the case did not break! To say that our case is durable is an understatement. It is probably the strongest waterproof case in the world.