The Nucleo High GTX is perfect for hikers who want a medium-duty boot for hikes in rugged, variable terrain as well as backpackers who seek a versatile waterproof boot that breathes well and supports moderate loads. Innovative Nano-Cell(TM) Technology upper wraps the foot in protection while allowing maximum breathability and waterproof protection Gore-TexA(R) Surround(TM) Technology allows 360 degree breathability without compromising the waterproof nature of the shoe 3D Flex(TM) ankle for lateral flexibility Durable Nubuck leather upper VibramA(R) Nano sole with Impact Brake System(TM) offers superior traction and grip AWARDS: Outside Magazine - Gear of the Year 2017 Specifications ITEM NUMBER: 14U SIZES: 38 - 49.5 (half sizes) WEIGHT: 16.80 oz (476g) LAST: Tempo UPPER: Nubuck leather / Nano-Cell(TM) direct injection / PU leather LINING: Gore-TexA(R) Surround(TM) INSOLE: 4mm Woven Polyester Surround Spacer / 2mm Polypropylene MIDSOLE: Compression Molded EVA / TPU inserts SOLE: VibramA(R) Nano with Impact Brake System(TM)