Action Movie Stars sometimes cut it close, and this you can wear under your clothes in case that scenes is a close shave.
I can think of many reasons to use this in film stunt work, and a lot of that involves wire work and sword play.
Now if being an action movie star isn't your job yet, then maybe your other job could use a little bit more safety in it.
This can also be something you keep in a bag or a car and could be a handy thing to pull on in a self defence situation.
I would ask you to consider one thing also.
How durable do you think a material that can't be cut is?
Pretty durable, right, so you know it will be long lasting.
That's great value for money.