Topo Athletic Ultrafly 3 Running Shoes

European seller Original product Fast delivery While maintaining a 28/23mm stack height and 5mm drop, the Ultrafly 3 now features our proprietary TPU-based Zipfoam™ midsole, giving it more stability and less compression than traditional EVA.. A more durable foam material along the medial heel, combined with an external TPU heel counter integrated into the upper, provides easy control during the gait cycle.. Engineered mesh upper with no overlays and molded foam collar for soft, seamless comfort. The antimicrobial Ortholite® insole protects against odor and provides optimal comfort during long runs.