Head off hiking with the Mercury III Mid GTX®: The shoe retains its stability and durability thanks to the terracare® nubuck leather, which is sustainably produced in Germany. Terracare® leather is made with minimal use of water, electricity from renewable energy sources and state-of-the-art production methods. This modern-looking hiking shoe from our Light Hiking series impresses with its supple, grippy vibram® Frog Grip sole and cushioning 3D memo foam in the lining and individual insole. All-around harmony: The breathable, waterproof GORE-TEX® Performance Comfort Footwear membrane provides all-around protection in changing weather conditions.