BIRKENSTOCK Boston Grip in Black Natural leather upper with EVA sole. Made in Germany. Strap with an individually adjustable metal pin buckle. Suede footbed lining. Anatomically shaped cork-latex footbed. Roomy toe box. Regular fit. BIRR-MZ17. 1023458. About the designer:
Birkenstock Boston Grip leather mules
From Farfetch
black leather slip-on style buckle fastening round toe rubber sole