Single strap sandals from Birkenstock. The 'Madrid' sandals are constructed with an oiled leather strap upper with an adjustable pin buckle in gold-tone metal. Set upon the label's trademark anatomically-contoured cork and latex footbed. Set upon a shock absorbing EVA sole that offers both comfort and foot support. Birkenstocks are designed to fit slightly generously in order to perform the natural rolling motion of the foot without restrictions. This gives the feeling of walking barefoot. Upper: Leather. Lining: Suede. Sole: EVA. Please Note: This style has a narrow fit.