The new and improved version of our bestseller has a flexible and grippy vibram® sole for optimum sure-footedness on day hikes. Damping 3D memo foam in the lining and insole as well as a breathable, waterproof Gore-Tex membrane ensure optimal comfort. High-quality terracare® nubuck leather gives the Mercury IV Mid GTX stability and durability. The terracare® leather, sustainably produced in Germany, and GORE-TEX Extended Comfort membrane are bluesign®-certified to protect our environment.