<ul> <li>The upper blends mesh, synthetic leather and textile materials to give you both durability and breathability.</li> <li>A rubber outsole with tapered lugs helps you efficiently run up and down hill, while providing the traction you need on rocky roads. A thick material across the toe adds extra durability.</li> <li>The speckles in the rubber outsole are made from Nike Grind, which is recycled waste (i.e., the scraps) from the footwear manufacturing process.</li> <li>Foam midsole</li> <li>Pull tab on heel</li> </ul>