Synthetic leather and air mesh upper with PHF(TM) (Personalized Heel Fit). SpEVA® midsole, visible rearfoot and forefoot GEL® Cushioning Systems offer shock attenuation at initial impact and propulsion phase. Extended DuoMax® medial post adds static stability and shores the midfoot. Trusstic System® links the rearfoot and forefoot for midfoot support, external medial counter provides added stability. One-piece rubber outsole with AHAR® + heel plug provides increased durability at initial impact zone. Weight 11.2 oz.