One of the main physical barriers is that post-consumer textiles, PCT, which serve as input to the Fibersort, lack consistency. Textile feedstock collection varies between municipalities, regions or countries, and volumes are influenced by seasonality, economics or social contexts. Therefore, the unpredictability of these inputs leads to a challenge when estimating feedstock availability. Further, finished textiles, especially clothing, consist of an extensive array of blended materials. For the Fibersort technology to be both economically and physically feasible, all textile blends are not able to be sorted. Therefore, the selection on which fractions are to be sorted has to reflect the volumes collected of each material type as well as the end-market demand for these sorted textiles.