Meet the upgraded version of a fisherman sandal - the Conundrum. With our ChaPU polyurethane midsole and LUVSEAT platform lasting arch support for a more efficient stride, you are bound to forget these are on your feet. A full grain leather upper with an adjustable instep sits atop a non-marking Vibram outsole that will keep you outdoors longer. LUVSEAT platform with lasting arch support and alignment for a long and lovely stride. ChaPU – polyurethane midsole. Vibram Gunnison Outsole. Non-marking. Weight: 15.2 oz .