<ul> <li>mesh</li> <li>Made in USA or Imported</li> <li>Stretch-knit upper expands and contracts with your foot.</li> <li>U-shaped Max Air unit provides responsive cushioning.</li> <li>Flywire cables deliver secure lock down.</li> <li>4-way stretch knit throughout the upper expands and contracts with your foot. It works with the partial bootie to deliver a secure feel.</li> <li>Injected Phylon (IP) midsole for lightweight cushioning and comfort.</li> </ul>