MATERIAL The original BIRKENSTOCK Sandal. A strap, a buckle, and a contoured cork footbed are masterfully combined to create the Madrid. An iconic slide with an amplified buckle accent. This model comes in a particularly cozy version with a color-coordinated shearling lined footbed and straps. The upper is made from extra thick, oiled nubuck leather. Anatomically shaped cork-latex footbed Upper: oiled nubuck leather Footbed lining: shearling Sole: EVA Details: strap with a big, individually adjustable metal pin buckle; color-coordinated footbed “Made in Germany” EU SIZE 37 -fits US 6.5-7 Note: narrow footbed symbol- (IMO fits an average/non-wide foot) 100% authentic No box Questions? Leave a comment below!