GUIDANCE LINE MIDSOLE TECHNOLOGY: Vertical flex groove decouples the tooling along the line of progression for enhanced gait efficiency. TRUSSTIC SYSTEM TECHNOLOGY: Reduces the weight of the sole unit while retaining the structural integrity of the shoe. AHAR OUTSOLE: Acronym for ASICS High Abrasion Rubber. Placed in critical areas of the outsole for exceptional durability. SPEVAFOAM 45 LASTING: Employs 45 degree full length SpEVAFOAM 45 lasting material for a soft platform feel and improved comfort. ORTHOLITE SOCKLINER: Moisture management (ORTHOLITE is a registered trademark of ATP Manufacturing LLC).