The Grishaverse

Corecloth is an exceptionally strong and flexible fabric that can withstand bullets. It was a Materialki invention and is used in making kefta for Grisha in the Second Army and the Oprichniki.

There are variations to corecloth, most notably the clothing worn by Jarl Brum and his drüskelle, specifically made by Fabrikators on jurda parem. This specific corecloth is designed to block a Corporalki’s powers, even one on parem.[1]


  • Corecloth's properties resemble real-life bulletproof vests used by law enforcement.


  1. Six of Crows, chapter 41