Doug Ritter's philosophy on survival knives is, "if it isn't with you, it can't save you!" We feel the same way that's why we worked with Doug to developed the RSK Mk5 which is small enough to fit in an Altoid tin. CRKT also makes large survival knives. You can use them to make fuzz sticks, construct shelter, gut a fish, dress game or for self defense. Whether it is wilderness or urban survival, you need a survival knife. You can surf through our selection and find one that works for you!