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 Clogs:
Slip-on style shoes with an open back and a closed front that are generally casual and comfortable. The sole is very rigid and traditionally made from wood, but modern styles also feature cork, rubber, or plastic soles.