Fabric Imported Rubber sole I.G.S (Impact Guidance System) Technology – ASICS design philosophy that employs linked componentry to enhance the foot’s natural gait from heel strike to toe-off. SpevaFoam 45 Lasting – Employs 45 degree full length SpevaFoam 45 lasting material for a soft platform feel and improved comfort. EVA Sockliner – Removable sockliner that provides cushioning performance. DuoMax Support System – A dual density midsole system positioned to enhance support and stability, positioned sport specifically. FlyteFoam Midsole Technology – Our FlyteFoam technology provides exceptional bounce back and responsiveness no matter the distance, utilizing organic super fibers to help reduce packing out that traditionally happens with softer, low density foams.