Heel Clutching System™: Exoskeletal heel counter provides improved support and creates improved heel fitting environment. DuoMax® Support System: A dual density midsole system positioned to enhance support and stability, positioned sport specifically. Discrete Eyelets: Independently placed eyelets disburse lace tension, creating a customized fitting environment and enhanced upper comfort. Guidance Line®: Vertical flex groove decouples the tooling along the line of progression for enhanced gait efficiency. Plus 3™: 3mm of additional height on women's models helps relieve achilles tension. Gender Specific Forefoot Cushioning: A top layer of injected Solyte® provides a cushioned platform feel in the forefoot. Women's models feature a lower density for improved cushioning and forefoot comfort. Impact Guidance System (I.G.S.®): ASICS® design philosophy that employs linked componentry to enhance the foot's natural gait from heel strike to toe-off. Biomorphic Fit ® Upper: Stretch material strategically placed on the upper helps to reduce buckling and the potential for irritation. Trusstic System®: Reduces the weight of the sole unit while retaining the structural integrity of the shoe. Rearfoot and Forefoot GEL® Cushioning Systems: Attenuates shock during impact and toe-off phases, and allows movement in multiple planes as the foot transitions through the gait cycle.