ASICS Women's GEL-Kayano 16 Running Shoe Synthetic and mesh Rubber sole Impact Guidance System employs linked componentry that enhances the foot's natural gait from heel strike to toe-off Gender Specific Forefoot Cushioning provides a cushioned platform feel in the forefoot Gender Specific Space Trusstic System recognizes the normal periodic changes in the shape of the woman's arch and provides for the controlled deformation of the arch into the space within the system Plus 3 adds 3mm of additional height on women's models helps relieve achilles tension Soft Top DuoMax provides greater comfort and enhances gait efficiency