The FuelCell foam within these shoes provides a powerful sensation that aids in propelling you forward. The upper material is made of synthetic and engineered knit mesh, offering a combination of durability and comfort. The construction of the upper involves a seamless design, resulting in a sleek fit and smooth feel. The Energy Arc technology integrates advanced carbon fiber plate geometry with strategically positioned midsole voids, enhancing the shoe’s ability to store and release energy. This design ultimately delivers a substantial amount of energy return. Additionally, the shoes feature a knit gusseted tongue, which enhances the fit around the midfoot for added comfort and support.