The often imitated, never duplicated, category-defining, two-strap wonder from Birkenstock. A comfort legend and a fashion staple. With adjustable straps and a magical cork footbed that conforms to the shape of your foot, a truly custom fit is as effortless as the classic design. Birkibuc a durable, synthetic upper material with a nubuck leather-like texture and a soft backing. It features a contoured cork footbed that conforms to the shape of your foot and features pronounced arch support, a deep heel cup, and a roomy toe box; lined with suede and lightweight EVA sole for cushioning and shock absorption.