100% waterproof premium leather upper and sealed seams.Cushioned lining made from Cosmo 100% recycled fabric.Rubber Vibram outsole provides grip and optimal ground adaptabilityThermo-urethane outsole resistant to hydrolysis and microbial attack.Injection molded rubber outsole and PU midsole with XRD Technology for all-day comfort and shock absorption.Highly resistant to oil, organic and inorganic acid. Heat resistant to 300(degree) C. Premium Comfort Air removable footbed: breathable, washable and anti-bacterialRubber sole performance is reduced in extreme conditions specifically below freezing. Do not wear on ice.