This is a very unique piece by Anthony Marfione, founder of Microtech Knives. The titanium alloy blade feels like plastic to the touch, but is very much an extremely sharp metal. I suspect that it would be impossible for me to sharpen myself if it ever got dull. On the back of a handle is a small ampule filled with radioactive Tritium which subtly glows blue in the dark. The half-life of Tritium is about 12.3 years, so it should at least keep glowing as long as I'm alive.