Synthetic-and-mesh Imported Rubber sole AmpliFoam Midsole - Engineered to maintain durability at softer densities, providing better flexibility, comfort, and platform adaptability ideal for natural running. GEL Technology - Cushioning provides excellent shock absorption Ortholite Sockliner - Moisture management (Ortholite is a registered trademark of ATP Manufacturing LLC). No-sew overlays improve support - Guidance Line Midsole Technology - Vertical flex groove decouples the tooling along the line of progression for enhanced gait efficiency.