Main producer today is China. It was invented in 1937 by Henry Ford and was called soy wool.
The fibre is complementary in blends with other fibers and it will not felt on its own. In blends with wool it improves hang and drape qualities, giving a superior lustre to the product and helping to reduce rubbing/pilling. It is possible to use the fibre 100% in yarns.
Absorption properties are similar to cotton and so the fibre feels cool. Its ventilation is superior to that of cotton with a silk-like appearance.
It is stronger than wool, cotton and silk but not polyester.