Silk is a natural protein fiber produced by the Bombyx mori silkworm, which spins it to form its cocoon. The fiber is harvested by boiling or steaming the cocoon to extract long continuous threads, a process that has been practiced for thousands of years, primarily in China, India, and other parts of Asia. Silk is known for its exceptional softness, natural sheen, and thermal regulation — keeping the body cool in summer and warm in winter.

Due to its fine texture and elegant drape, silk is widely used in clothing, accessories, and home textiles such as pillowcases and bedding. While silk is biodegradable and long-lasting, traditional production is not considered cruelty-free, as it often involves killing the silkworm in the cocoon. However, alternatives like "peace silk" or "Ahimsa silk" allow the moth to emerge before harvesting.