Brooks - Adrenaline GTS 5 (White/True Navy/Lithium Oxide/Silver) - Women's: Brooks progressive stability technology, incredible flexibility, outstanding fit, and HydroFlow cushioning make the new Adrenaline the most versatile performance running shoe on the planet. Featuring progressive posting for ultra-smooth transitions through the gait cycle, this shoe give a whole new meaning to the term fluid motion.; Heel and forefoot HydroFlow - the best cushioning system in footwear. It absorbs shock, stabilizes the foot and returns energy back to the foot, stride after stride. Full-length S-257 midsole Exclusive midsole compound formulated to decrease breakdown by 15% while providing excellent energy return and cushioning on every stride. Progressive Diagonal Rollbar (PDRB) Brooks dual-density S-257 post is biomechanically engineered to allow for progressive pronation control as the foot rolls inward and creates, a smoother transition from the midstance phase into the propulsion phase. HPR - high-density carbon rubber in the heel for increased traction and outsole durability. Dual Density DRB Accel - High-density molded TPU engineered into the midfoot for torsional stability. A softer density is placed on the lateral for a smooth ride and a firmer density is placed on the medial for added stability. Engineered Stable-Pod configuration midsole and outsole componets are engineered to set the foot in an efficient, balanced position from heel strike to toe-off, offering maximum stability and responsiveness. S-257 cushsole durable and energy efficient midsole compound utilized as an insole board for even more cushioning and flexibility. Microfiber and air-mesh upper soft, supple and breathable upper materials securely wrap and support the foot. Internal support saddle internal arch wrap provides added upper support through the midfoot for a glove-like fit. Shoe weighs 10.5 oz.