Mephisto Brown Leather Lace Up Casual Sports Shoes Size 11.5. These fantastic shoes are great for support! They feature the Mephisto air bag system in the black soles and the soles are 100% caoutchouc or natural rubber. The uppers appear to be made of a soft, great feeling leather with leather on the inside as well. Preowned with mild to moderate wear but no flaws aside from typical light scuffs/marks.From a smoke free, pet friendly home.