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Kirza (Russian: кирза) is an early Russian type of artificial leather based on a multi-layer textile fabric, modified by membrane-like substances. It consisted of cotton, latex and rosin. It was produced mainly in the Soviet Union. The surface of kirza imitates pig leather.[1]
The material is mainly used in the production of military boots, where it is a cheap and effective replacement for natural leather. It is also used in the production of belts for machinery and automobiles. The Kirza SK high boots were named by soldiers as 'shit trampers'.[2] It is also used in holsters.[3]