Mountain running shoes specifically designed for ultra enthusiasts offer maximum cushioning, comfort, protection, and stability during mountain excursions. They are ideal for tackling all types of trails over medium to long distances, including some of the most iconic and challenging trail running races in the world, such as the Tor Des Geants (330 km), Swiss Peak (360 km), and Tahoe 200 (320 km). With the new XFlow Endurance blend, we enhance the resilience and durability of the cushioning material to ensure a consistent feeling of comfort from the first to the last kilometer. The sole features a large contact area and a moderate rocker to increase stability, while the bi-component FriXion Red sole strikes the perfect balance between durability in the heavily used heel area and maximum grip in the mid and forefoot sections. The new Comfort Wire upper is made from extremely soft Light TPU fabrics that come into direct contact with the foot, reinforced with externally applied TPU threads to provide an extremely soft fit while maintaining the right support – the perfect compromise for maximum comfort and hold on the longest and most demanding outings.