These carefully crafted boot uppers feature soft and supple Sun Reflect leather that is both hydrophobic and breathable, and reduces the heating effect of the upper leather by direct sunlight, keeping the leather and the feet cooler. The inner liner is made from 4-layer GORE-TEX® and is not only waterproof but also breathable and chemical resistant. The inner liner is especially abrasion resistant and softly padded with breathable foam. The HAIX® Climate System permits air circulation with every step and in conjunction with our Secura Liner® system, keeps your feet dry all day long. The HAIX® Arch Support System also supports the arch of the foot in its natural ideal position. The anatomically formed insole is machine washable and replaceable. The rubber PU sole is oil, fuel, and skid resistant, non-marking, self-cleaning and antistatic.