✔ synthetic-and-mesh
✔ The upper material has spandex for a more dynamic, improved fit than before. Still lightweight and soft, the upper is easy to collapse, so you can quickly slide the shoe into your tote or backpack.
✔ A wide strap wraps your heel for added support, better structure and a more secure fit. Padding in the heel adds another level of comfort.
✔ The soft, lightweight sole mimics your foot's natural movement through its innovative pattern. It expands and contracts with every landing and push-off. This provides a natural feel and a barefoot-like sensation, kind of like an extension of your foot.
✔ Flywire cables work with the laces for more support as you tighten them