I know this because I buy these shoes all the time. Previously, they used the material to refine the leather of the gloves. Now it is very hard and not as soft as before. I am very disappointed in the new quality. It's heavy on the foot and will take some time to break down while the earlier version was much easier and more comfortable. I can't return it because I used it, otherwise I would have. Next time I will look for a different brand.