ASICS GT-3000 Running Shoes I.G.S - ASICS Design Philosophy employs linked componentry that enhances the foot's natural gait from heel strike to toe-off. Rearfoot & 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. Full Length Guidance Line - Vertical flex groove decouples the tooling along the line of progression for enhanced gait efficiency. Double Density Solyte Midsole - The full length double Solyte midsole features a lower density top layer for improved cushioning and comfort. Dynamic DuoMax Support System - A dual density midsole system positioned to enhance support and stability, positioned sport specifically.