Asics GEL-Nimbus14 Sneaker. Women's running sneaker. American Podiatric Medical Association (APMA) Seal of Acceptance. Guidance Line® vertical flex groove decouples the tooling along the line of progression for enhanced gait efficiency. ComforDry™ sockliner provides cushioning performance and anti-odor properties for a cooler, drier, healthier environment. Solyte® lighter weight midsole compound than ASICS' standard EVA and SpEVA®, featuring enhanced cushioning and durability. Space Trusstic System® midfoot stabilizer creates a pocket between the Trusstic System® device and the midsole, allowing for controlled midsole deformation and more efficient foot function. Impact Guidance System (I.G.S.®) design philosophy that employs linked componentry to enhance the foot's natural gait from heel strike to toe-off. P.H.F.® (Personalized Heel Fit) - 2 layers of memory foam line the collar and mold to the athlete's heel, creating a personalized fit. Heel Clutching System™ exoskeletal heel counter provides improved support and creates improved heel fitting environment. DuraSponge® blown AHAR® rubber compound for enhanced cushioning and durability in the forefoot. Biomorphic Fit ® stretch material strategically placed on the upper helps to reduce buckling and the potential for irritation. Independently placed eyelets disburse lace tension, creating a customized fitting environment and enhanced upper comfort. Upper: breathable mesh and synthetic.