Arch Support generally refers to the part of the insole of the shoe that raises right at the level of the arch to provide support to the midfoot. Arch Support also refers to individual insole cups with a molded shape that fit the arch and are placed inside the shoe to help relieve foot or heel pain.
About Fisherman Sandals:
Fisherman Sandals are sandals featuring wide woven strips of material on the upper. Fisherman sandals may have an open or closed toe, but will have openings along the upper where the woven strips cross and attach to the sole.