lightweight, engineered -toned mesh top production for accelerated ventilation. Cushioned ankle collar & tongue for brought comfort. Complete-length molded sockliner forms to the foot, eliminating slippage & offering best underfoot comfort. Charged cushioning midsole is firmer in the heel & softer in the forefoot for aid & consolation. Strong rubber outsole covers excessive impact zones for greater sturdiness with less weight. Anatomically located flex grooves offer proper flexibility in key regions.