The meaning of V, GV and GTX in the Asolo style names: V stands for a Vibram outsole, GV stands for Gore-Tex lining with a Vibram outsole, and GTX is for a GORE-TEX lining. Ideal choice for light hikers and trekkers who demand lightweight and comfort with a snappy design. Duo Asoflex midsole in which two elements are melted together to improve comfort and performance. The first element, constructed of a stiff material benefits anti pronation, anti supination and anti torsion. The second element, constructed with a softer material offers shock absorption while walking. Water resistant suede and Cordura uppers. GORE-TEX liners for waterproof yet breathable boots. Outsole is a combination of bi-density rubber bottom for cushion and traction. Shoe weighs 1.52lbs (690gr). Measurements: Weight: 1 lb 10 oz Shaft: 5 3 4 in Product measurements were taken using size US Men~s 10, width D - Medium. Please note that measurements may vary by size. Weight of footwear is based on single item, not the pair.