At just over seven ounces, the Montrail Women"s Rogue Racer Trail Running Shoe takes lightweight to a whole new level. And whether your inner minimalist is craving a bare-bones trail run, an ultralight trek, or a demanding 24-hour adventure race, the Rogue Racer"s low profile and generous flex will keep you stepping lively for many miles. Product FeaturesUpper Material: mesh, synthetic leatherLining: Waterproofing: Sole: Gryptonite (rubber)Midsole: compression-molded EVAFootbed: Heel / Forefoot Height: 20 mm / 10 mmConstruction: Lacing: standardArch Support: Weight: (average) [each] 7.4 ozRecommended Use: trail running, adventure racing, ultralight hikingManufacturer Warranty: 1 year