saddle shoe

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A flat casual shoe, usually white, having a band of leather in a contrasting color across the instep.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A shoe, resembling an oxford, which has a saddle of a leather or color different from the rest of the shoe.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun an oxford with a saddle of contrasting color