We have completely reimagined them to enhance the comfort and light stability that have always been the foundation of the Ultrafly. Equipped with even more powerful cushioning than its predecessor, we have redesigned the medial support to now wrap around the heel, ensuring smooth stability throughout the entire stride. The ZipFoam™ midsole has evolved and now offers an even more responsive step. An additional rubber reinforcement on the outsole improves durability and grip while optimizing the shoe's inherent stability.