Developed along with the Biomechanics Institute of Valencia Footwear that is ERGONOMIC and RESPECTFUL of their feet at each stage of development. SOFT and FLEXIBLE, designed to offer protection in uncontrolled environments. So they can take their first steps confidently FLAT INSOLE, without plantar arch, REMOVABLE and BREATHABLE to prevent the formation of fungi and bacteria. BioLinning micro-perforated LINING: SUSTAINABLE and even more DURABLE. Free of agents harmful to health. Biomecanics' INNOVATIVE BioLinning system made up of MICROFIBRES with a leather-like feel does not fade and favours EVAPORATION within the shoe. THERMOREGULATING EFFECT for dry and healthy feet Antibacterial Insole Chrome & Nickel Free Breathable & Light Biolinning (See Below)