The Gold Sole is a heritage inspired lug pattern which is part of our "Vibram Vintage" series. It is a rubber molded sole that mimics the 1930s hiker Look and feel, it compresses when walking similarly to a tire hitting the pavement, and then expands upon each step / leg lift. A very unique offering, this is best on boots of all varieties. Relatively thick and bulky if that's what you desire. Rugged! Also available in Black if specified in the comments field when ordering.