Arizona Birkenstock Arizona This icon among slip-on cork sandals needs no introduction! Still the favorite after all these years and still the most comfortable. The classic cork footbed supports all your arches, adapts to your feet, and is completely repairable. Nebraska Newalk Nebraska This style combines comfort and versatility to give you a truly practical sandal. Three buckle adjustments provide a customized, secure fit, the contoured cork footbed provides good arch support and is replaceable.