Shock-absorbing Charged Cushioning protects against impact, while deep flex grooves allow maximum movement, and a lightweight, stretchy fit wraps your foot in comfort. Light, breathable stretch-mesh upper with molded synthetic midfoot panel for added durability & support. Removable foam sockliner for ultimate step-in comfort & cushioning. Charged Cushioning midsole uses compression molded foam for ultimate responsiveness & durability. Solid rubber outsole covers high impact zones for greater durability with less weight. Anatomically placed, deep flex grooves offer extra flexibility in key areas.