Material: "Polytex": "eco-friendly" fabric that offers strong resistance to tearing, laceration and discoloration. TECHNO 3 SYSTEM closure. Adjusts the entire length of the shoe, adapting the upper part to the shape of the foot, offering a personalized fit. Reinforced heel that keeps the foot in an optimal position and prevents the shoe from being deformed by extreme performance or prolonged pressure. Rubber "outdoor" sole that provides a good grip even in muddy terrain (with 4 holes for attachment to SPD ledales).