GORE-TEX® waterproof/breathable membranes keep your feet dry in wet weather Inspired by trail-running shoes, these boots follow the natural flexion of your feet for a smooth ride Protecting ankle articulations on the outer foot, the updated ADV-C 4D chassis provides stability and supports your heels to help reduce fatigue when wearing a heavy pack Contagrip® TD rubber outsoles with deep, aggressive lugs provide extended durability and maximum traction on mixed terrain