Redi-Thotics MAX offers firm orthotic support for tired, aching arches and feet. The ABS shell will support and cradle the arch while our Supreva foam layer will give comfort and cushioning to impact and shock forces. An extra high arch will support a cavus foot while the extra thin shell extends forward to the first metatarsal for added comfort.The Barrettex top cover wicks away moisture while maintaining a soft upper for extra comfort and dryness.