Fabric Imported Fabric sole Plus 3?Midsole Technology – 3mm of additional height on women’s models helps relieve achilles tension. FlyteFoam Propel Technology – ASICS energetic foam formulation that provides supreme bounce thanks to a unique elastomer compound. Rearfoot and Forefoot GEL Technology Cushioning System – Attenuates shock during impact and toe-off phases, and allows movement in multiple planes as the foot transitions through the gait cycle. Guidance Line?Midsole Technology – Vertical flex groove decouples the tooling along the line of progression for enhanced gait efficiency. AHAR Outsole – Acronym for ASICS High Abrasion Rubber. Placed in critical areas of the outsole for exceptional durability.