What is the best self defense weapon for when you have to walk to your car, late at night, in the dark parking garage? Not a simple answer really. While I might like to carry a knife, I would rather my wife carried pepper spray or the Sting Ring. I guess I would lean a bit more toward the Streetwise Sting Ring because you can test fire it if you feel nervous. Imagine if someone is following you to your car and you have the Sting Ring in your hand and give it a quick blast. 18-million volts making that loud cracking sound will scare off most folks. Also, the sting ring fits in the palm of your hand and wraps around the middle finger. This makes it very difficult to have it taken away from the user.