The Merrell All Out Blaze Vent GTX Hiking Boot features a lightweight design that is responsive, resilient and flexible. This is a shoe is built to activate your natural form and maximize your effort on the trail. This vented shoe keeps feet cool while flexing perfectly for reliable comfort. Lightweight and shaped to activate your foot muscles, stabilizing movement and absorbing impact the UniFly technology gives you a comfortable ride no matter the terrain. GORE-TEX Extended Comfort Footwear lining keeps feet dry and comfortable. In addition aggressive lugs maximize ground contact and agility adding up to a speedier, more controlled ascent on your favourite trail. Upper and Lining: * Waterproof oily leather and mesh upper *Molded TPU external heel counter for added stability *Dye cut rubber *Bellows tongue keeps debris out *Breathable mesh lining treated with M-Select FRESH odor control *Merrell Omni-Fit lacing system provides a precise, glove-like fit *GORE-TEX Extended Comfort Footwear lining keeps feet dry and comfortable Midsole and Outsole: *UniFly responsive cushioning system lets you go further, faster, longer *6mm lug depth *Vibram outsole