Ecological material Microfiber Microtech: provides the shoe with resistance, stability, lightness, breathability and waterproofing. Manufactured using "Water-Tech" water treatment. SOFT INSTEP CLOSURE SYSTEM and TECHNO-3 SYSTEM closure systems (replaceable). Reinforced heel that keeps the foot in an optimal position and prevents the shoe from being deformed by extreme performance or prolonged pressure. MTB RS17 sole: made of nylon with polyurethane inserts. With replaceable non-slip cleats.