éLightweight synthetic and mesh upper with nearly seamless construction. Lace-up closure for a snug and custom fit. High impact shock absorbing midsole. M-Strike Technology promotes a midfoot strike. Proprietary lightweight injection-molded Resalyteâ" midsole with memory retention to help absorb impact. Independent circular GOimpulseâ" Sensors for a more responsive running experience. Dupontâ" Delrin material stability plate in midfoot for a supportive and secure run with even less weight. Seamless interior with microfiber lining maximizes comfort. 4mm heel drop keeps foot in a nearly neutral position. Improved fit and comfort with a wider forefoot for more natural feel.é