Danshuz Women's Stretch Split Sole Ballet Shoes Leather Leather Upper - These shoes were built to last, using a full-grain leather upper that is incredibly durable while also flexible. Split Sole Design - The idea behind this design is to allow the heel and ball of the foot to flex and move independently, allowing a broader range of dance. Elastic Binding - Rather than ties and laces that can get in the way, this shoe has an elastic binding that's simpler and safer. Spandex - This shoe is created in part with spandex, which not only holds it snugly to the foot but also allows for a lot of flexibility. Cushioned Insole - While not very thick, the cushioned insole of this shoe was designed to provide a lot of comfort and to absorb shock.