[kaktuskid]

The original Levi’s were made from canvas material

[Gaffer]

https://www.levistrauss.com/2019/07/04/the-history-of-denim/

Developers own quote. “We used denim”

History of Denim (or serge de nimes)

https://www.masterclass.com/articles/what-is-denim-fabric-a-guide-to-the-history-of-denim

IMO, the ‘real’ advancement in durability was the inclusion of the rivets in critical areas that could rip/tear.....