Gear up and prepare for your next long-distance backpacking adventure with the Zamberlan Vioz Top GT RR Boot. A Gore-Tex lining keeps this boot waterproof and breathable, but Zamberlan knows that the inside of a boot is just as important as the outside. That"s why they outfitted the Vioz with a Microtex wicking nylon collar lining for further moisture management and comfort. Product FeaturesUpper Material: Hydrobloc full-grain leatherWaterproofing: Gore-Tex membraneInsulation: Temperature Rating: Sole: Vibram ZamberlanMidsole: Zamberlan Air System, Zamberlan Z-FlexFootbed: Zamberlan Z-Comfort FitLacing: standardWeight: [pair] 30.6 ozRecommended Use: winter trekkingManufacturer Warranty: 1 year