There are survival knives, and there are survival knives for the professional survival. Our models F1, S1 and A1 have provided exceptional service for more than twenty years and due to their outstanding quality and durability will continue to do so for many years to come. Nevertheless our desire to strive for continual improvement has led us to develop the new Pro Series which takes the concept of the survival knife to unimaginable heights of quality. We began developing these impressive new knives in 2010 and five years later, we're able to offer three survival knives which set the benchmark for survival knife manufacture the world over - the Pro series. To put it simply a knife is a blade and a handle. But if this vital tool is to remain strong and stay sharp you have to add fairly decent materials. If you then claim to call a knife professional you take on a responsibility to the user to raise the bar above what is normal. So it is with the Pro series.