The GEL- Foundation 12 Shoes gives runners maximum stability thanks to their Dynamic DuoMax Support System. The SPEVA midsole material gives runners a springy, responsive ride with rearfoot and forefoot GEL Cushioning Systems that attenuate shock throughout the full transition. Guidance Line technology uses vertical flex grooves for enhanced gait efficiency, while the Trusstic System provides midfoot structural integrity. Seamless materials reduce irritation and friction for minimal distractions so you can focus on your performance.