FuelCell foam provides a propulsive sensation, enhancing forward propulsion. Take advantage of the BOA Fit System to easily achieve a fast, effortless, and precise fit. Enjoy the innovative fit, function, and style offered by TRACE FIBER upper technology, which utilizes digitally tuned fibers. The Energy Arc feature combines advanced carbon fiber plate geometry with strategically positioned midsole voids to boost stored energy, resulting in a substantial amount of energy returned with each step. Additionally, the shoe includes a built-in tongue for a secure, breathable, and hassle-free fit.