What are natural fibres?

Natural fibers are fibers that are made out of natural materials that come from plants, animals, or minerals. The raw, natural materials are spun into threads and yarns that are then woven or knit into natural fabrics. There are two general categories of natural fibers: animal-based or plant-based. Animal-based natural fibers include silk, wool, alpaca, cashmere, while plant-based natural fibers include cotton, linen, and jute.