Assassin's Wool

In a small town in the Andes, there is a herd of sheep who were once crossbred with what were basically space sheep. This produced viable offspring and a new kind of sheep. The cool part is the wool, though. If you want a sweater that can also provide power to your wrist launcher, this is where you look.
Somehow the crossbreeding caused the sheep to produce a wool that is capable of holding a stable electrical charge that can be transmitted into devices in a regulated way. It's also a relatively tough material (not quite bulletproof but should be able to turn aside most knives) and if properly processed can be incredibly soft. Also, it is still wool, so it's quite warm.
As such, it's a very common material used in cold weather superhero gear. A lot of people will use it as a jacket liner, or use gloves made of it. It takes some work, but you can produce a very fine thread out of it, and as such there are a few people who have sported evening gowns.
Don't use when wet. The wool part of it stinks, and the alien part of it is 50% more likely to electrocute you.
 I mean it. Not a good idea at all.
The name comes from its early days associated with the Order of Death and the assassins. They used it in their uniforms almost exclusively. Then someone found the secret farms and everyone started using it.
No danger of running out of wool since the sheep are a protected species. So protected, in fact, that none of the endangered species organizations even know about them. In any case, those who do know prefer to use secrecy to protect this resource.

Type

Textile