Impact Guidance System IGS - ASICS design philosophy that employs linked componentry to enhance the foots natural gait from heel strike to toe-off DuoMax Support System - A dual-density midsole system positioned to enhance support and stability AHAR - ASICS High Abrasion Resistant rubber on the outsole Helps cut down on excessive wear Solyte 55 Lasting - Employs 55 degree hardness Solyte Lasting material for a soft platform feel Rearfoot and Forefoot GEL Cushioning Systems - Shock absorbing material placed in midsole of shoe Shape of units designed for special function