Abstract: A modular, customizable shoe assembly comprises a shoe shell including a shell attachment mechanism on a lower portion of the shoe shell and a pair of engagement members on an upper medial region of the shoe shell. The shoe assembly includes at least two different types of shoe soles which can be releasably connected alternatively to the shoe shell. Each of the shoe soles have a sole attachment mechanism adapted for releasable connection to the shell attachment mechanism. At least two different types of securement assemblies which can be releasably connected alternately to the shoe shell are provided and each of the securement assemblies are adapted for releasable connection to the pair of engagement members. The securement assemblies are arranged and designed to aid in securing the shoe to a wearer's foot. The shoe shell may also include a back heel mechanism on the rear of the shoe shell. A detachable loop piece having an upper loop is arranged and designed to detachably connect to the back heel mechanism.