Discover comfort worth sweating over with the fourth generation of our best-selling women's trail running shoes. The Topo Athletic Ultraventure 4‘s plush platform combines with our signature roomy toe box to deliver long-lasting comfort, while the ZipFoam™ midsole offers lightweight response. Our Vibram® XS Trek EVO outsole offers excellent multi-surface traction, with a lug pattern and depth optimally designed for light to moderate trails and for easy trail-to-road transitions. The recycled mesh upper features a fresh look, now with strategically placed PU print for added structure and durability. Performance Insoles Comfortable insoles with long-term resilience and anti-microbial properties. Roomy Toe Box Anatomical toe box allows toes to spread naturally and comfortably. Vibram Outsole Unparalleled grip and traction and durability from the leaders in technical outsoles. More Cushioning and Resilience Proprietary midsole compound which is springier than EVA and offers more rebound over the life of the shoe.