Detail: Aerantis™ technology - air circulation around the foot, Amphibiox technology - special breathable and waterproof membrane Model: Aerantis Color: blackSpending : lacingSpecification : Geox Respira technology – combines perforated sole and special breathable waterproof membrane, Amphibiox™ thermoregulatory waterproof technology, suspension damping to protect against shocks, Aerantis™ technology is an air circulation system around the foot that is activated by movement, removable insert, also suitable for wider foot type Material characteristics: breathable, waterproof, lightweight Material: outer part - 54 % cowhide, 24 % textile, 22 % syntheticsinterface - 93 % textile, 7 % genuine leather insole - 100 % genuine leather sole - 60 % synthetics, 40 % rubberSkin properties: Leather is a natural material of animal origin that has its typical properties, such as scars, pigment spots, abrasions or wrinkles. Washing and maintenance: wipe with a damp cloth.