An unparalleled running experience that delivers maximum cushioning and an unsurpassed ride. Soft, pliable upper offers just enough embrace and high breathability. Full-length Infinity Wave midsole for a high degree of cushioning and shock attenuation from heel-strike to toe-off. Rubber outsole with Smoothride engineering utilizes flex grooves in the heel to promote a smooth, rocking chair motion throughout your stride. Wt. 12.3 oz.