The best version yet of our fan favorite all-purpose daily trainer has landed, now featuring even more comfort and more sustainable materials. The sleek and comfortable upper features a recycled engineered mesh and our signature roomy toe box. The ZipFoam™ midsole delivers lightweight resilience and response, while an external TPU heel counter and EVA medial post offer light guidance. The Topo Athletic Ultrafly 4 is perfect for those seeking light pronation support with a smooth and comfortable ride.