There"s more than one reason the Zamberlan Steep GT Boot won the Backpacker Magazine 2010 Editor"s Choice award. Rugged leather uppers and weather-resistant Hydrobloc treatment are just two of those reasons. Product FeaturesUpper Material: nubuck leather, split-grain leatherWaterproofing: Gore-TexSole: VibramMidsole: polypropyleneFootbed: Construction: Lacing: standardWeight: [pair] 1530 gRecommended Use: backpackingManufacturer Warranty: