The often imitated, never duplicated, category-defining, two-strap wonder from Birkenstock vaunts a grey hue and comes with a narrow width. The pair is made in Germany. The Birkibuca durable, synthetic upper material with a nubuck leather-like texture and a soft backing make it a must-have. Contoured cork footbed conforms to the shape of your foot and features pronounced arch support, a deep heel cup, and roomy toe box. Besides, the lightweight EVA sole provides for cushioning and shock absorption.