Engineered mesh upper with 2-tone twist effect is extremely lightweight & breathable. Lightweight, external heel counter for additional support that keeps the back of the foot locked in place. Dual density charged cushioning midsole for the ultimate blend of comfort & explosive energy return. Full-length molded sockliner forms to the foot, eliminating slippage & providing ideal underfoot comfort. Solid rubber outsole covers high impact zones for greater durability with less weight. Reflective details.