Pride silk

Pride silk is a uniquely durable silk used to make extremely strong cloth.

Description
Pride silk is harvested from rare, fist-sized silkworms that live in the geothermal caves beneath the Dwendalian city of Pride's Call. Using a secret process, the resilient silk strands are woven to create a material that looks and feels like thick silk, but is as tough as treated leather. As of 835 PD, rumors began to spread that outsiders had uncovered the secret of pride silk, threatening the city's monopoly.

Usage
Pride silk cloth is used for military ship sails, war banners, and other utilitarian applications for its durability. Nobles also use the silk to be made into high-end outfits that are both fashionable and protective, though the cost of such an outfit is prohibitively expensive for common folk.