Zamberlan Men's 1009 Vioz Top GT RR Hiking Boot 100% Leather Vibram sole Gore-Tex Duratherm membrane provides waterproof performance and insulation to roughly minus 10 degrees Fahrenheit The 3/4 rubber rand protects 2.8mm of Zamberlan hydrobloc full grain waxed leather and ensures your boots will last for years to come with proper care Vibram StarTrek sole features dual density polyurethane support with a TPU stabilizer over the arch for excellent grip, comfort and performance