Brooks - Ariel (White/Purple Dusk/Tarnish/Silver) - Women's: A very stable running shoe designed for excessive over-pronators. Delivers maximum support through an engineered combination of sophisticated stability technologies. Unique heel and forefoot HydroFlow optimizes cushioning and stability. Engineered MC-Pod midsole and outsole configuration improves motion control and flexibility. Full length S257 Midsole provides energy return and excellent cushioning with every stride. S257 Cushsole for even more cushioning and flexibility. Extended, dual density DRB midsole helps minimize excessive pronation. High density TPU provides added support and torsonal rigidity. External heel stabilizer cradles the heel and provides medial and lateral stability. Anatomically correct polyurethane sockliner adds cushioning and durability. Shoe weighs 12.2 oz.