ASICS Dynaflyte 4 Women's Running Shoes White/Graphite Gray : Push your limits and go the distance in ASICS DynaFlyte 4 running shoes. This version features updates that improve overall comfort while reducing the shoe's weight by nearly a full ounce. This plush shoe helps you strive for your best run every time you wear it thanks to a design that enhances your natural gait. Upper: Engineered multi-directional mesh upper offers added support in needed areas without compromising breathability or adding weight. Independently moving eyelets allow more natural foot movement. Midsole: Impact Guidance System (I.G.S.A(R)) enhances the foot's natural gait from heel strike to toe-off. New sockliner is contoured for an improved fit. Rearfoot GELA(R) Cushioning System attenuates shock during impact and toe-off phases. FlyteFoamA(R) Lyte provides responsiveness from supremely lightweight, durable material. Outsole: AHARA(R) ASICS High Abrasion Rubber placed in critical areas provides exceptional durability.