The GT-2160 delivers great stability for slight to moderate over-pronation issues. The ride is incredible with a super responsive midsole while the sponge rubber AHAR forefoot delivers great durability but also provides a super feel under foot. Technical Specification IMPACT GUIDANCE SYSTEM (IGS) - ASICS Design Philosophy. Employs linked compentry that enhances the foots natural gait from heel strike to toe-off. REARFOOT AND 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. GUIDANCE LINE - Vertical flex groove decouples the tooling along the line of progression for enhanced gait efficiency. COMFORDRY SOCKLINER - Provides cushioning performance and anti-microbial properties for a cooler drier healthier environment. DUOMAX SUPPORT SYSTEM - A dual density midsole system positioned to enhance support and stability positioned sport specifically. SOLYTE MIDSOLE MATERIAL - A lighter weight midsole compound than ASICS standard EVA and SpEVA. Also features enhanced cushioning and durability