Boxing bags made of kirza
Kirza is a strong multi-layered cotton fabric, soaked in a hydrocarbon solution of synthetic rubber, and then thermally processed to form a film-like layer on the outside. The outer surface of the kirza is usually subjected to thermal embossing to imitate the texture of pigskin. Kirza is also commonly known as "devil's leather" in colloquial language.
The word "kirza" is derived from the name of a coarse cotton fabric - kersey (in English), which was originally used to make this leather substitute. The name of the material is associated with the place of its production - the village of Kersey in Suffolk county.