Hi all, long time lurker here and this is my first post. I hate to start on a negative note so I'll try to make this a positive.

It seems to me that the concept is excellent, but the implementation is flawed. I can just see the headlines now... "Man Burned While Pumping Gas - Spark from Jewelry Suspected"

It seems to me that the design should be flipped such that the striker is on the inside of the wrist and the fire steel is on the outside. The firesteel should also be thinner and longer and completely wrapped in paracord so that a casual bump against steel objects in everyday life will not emit a spark.

Other than that, I think your concept of incorporating a fire steel and striker is awesome.