According to an article on Materialdistrict.com, Spinnova developed a technology for manufacturing cellulose-based textiles, such as rayon or viscose, without the use of harmful chemicals or waste streams. Usually, these textiles are made of wood cellulose. In the Fortum collaboration, however, wheat straw was used.
Wheat straw is agricultural waste, which is commonly discarded or even burned in the fields. Using it in textile would open up many possibilities for the fashion sector, and would be a huge step in a more sustainable direction.