The most natural feeling shoe in the Topo line, Topo® Athletic St-6, is built for daily runs, up-tempo workouts, and gym work. The 14 mm, 0-drop platform delivers a natural, flexible, and lightweight ride, with our ZipFoam™ midsole for added response. The recycled mesh upper offers a breathable and secure fit, while the collapsible heel counter allows the shoe to pack flat into a gym bag or for travel.