Lowa - Vertex GTX (Black/Silver) - Men's: An innovative trekking boot with BIOMEX technology for optimum hold, stability and comfort on the foot. Microfiber material upper combined with tough, abrasion-resistant Cordura. Waterproof GORE-TEX lining for climate-controlled comfort. Vibram "Vertex" sole with shock-absorbing PU midsole. Asymmetric tongue.