It's safe to say that Adidas knows a thing or two about speed, and its Men's Terrex Fast X High GTX Hiking Boots are no exception. Designed to propel you forward, the boots are fitted with an Adiprene midsole at the forefoot to keep you moving quickly. A Gore Tex membrane provide the boots with proven waterproof, breathable performance. For stability, the Terrex's feature Adidas' outdoor specific Formotion unit to give you the stability you need when hiking through variable terrain. A durable Continental rubber sole ensures traction on slick and steep trails.