100% waterproof premium leather upper and sealed seams. Cushioned lining made from Cosmo 100% recycled fabric. Rubber Vibram outsole provides grip and optimal ground adaptability Thermo-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-bacterial Rubber sole performance is reduced in extreme conditions specifically below freezing. Do not wear on ice.