Topo Athletic Running shoes Ultrafly 6

We have completely rethought it to enhance the comfort and light stability that have always been the foundations of the Ultrafly. Equipped with even better cushioning than its predecessor, we have redesigned the medial support so that it now wraps around the heel and ensures smooth stability throughout the stride. The ZipFoam™ midsole continues to evolve and now offers an even more responsive stride. An additional rubber reinforcement on the outsole improves durability and grip while optimizing the inherent stability of the shoe.