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 Deck Shoes:
Low, flat-soled shoes that can either be lace-up or slip-on. Deck shoes are also known as boat shoes for their popularity among the preppy and yachting set. The classic design is a moc toe with leather laces and lacing that runs though a lip around the mouth of the shoe.