Eri silk, also known as Endi or Errandi silk, is a type of silk produced by the castor silkworm. Unlike traditional silk, Eri silk is harvested after the silkworm has left its cocoon, making it a cruelty-free option known as “peace silk.” This coarse-textured silk is prized for its thermal properties, often used in clothing like sarees and shawls. Eri silk supports local communities, particularly in India, where it is traditionally produced, and its ethical production has gained attention in the fashion industry as a sustainable alternative to conventional silk.