Reebok - Vector IXT II (White/Ice Blue) - Women's: Microcirc technology disperses pressure under ball of foot. 15mm PU Smart Sack replaces forefoot midsole providing instant comfort and cushioning as well as extreme flexibility. DMX foam provides underfoot heel cushioning. Full-grain leather upper provides comfort and breathability. Ventilated midfoot shank provides support and underfoot ventilation for comfort. Low profile for easy entry into cardio machines. Play Dry linings provide moisture wicking treatment.