Designed for long-distance trail running (35 to 150 km), the Track Four offer H4 crew-height coverage (8 cm above the shoe), protecting the ankle without restricting mobility on technical terrain. Their ergonomic +A fit, pressure-free construction, strategic ventilation zones and anti-slip instep band ensure all-day adaptability and chafe-free comfort. The ESP2 plantar structure, with reinforcements in the heel, midfoot and toe, provides effective cushioning while maintaining a lightweight feel. Equipped with Bmax Tetra technology, they regulate heat, moisture and friction to help prevent blisters. The Antiodour Base Layer mesh adds natural antibacterial and odour control.