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 Ballet Shoes:
Ballet Shoes are light shoes that are designed to be used in the ballet style of dance. They can be made of either leather or canvas. Ballet Shoes may also refer to casual styles of footwear that are made to resemble the elegance of the styles made for dance.