BIRKENSTOCK Leather White Sandals - Size 37. Color: White. The modern thong sandal from Birkenstock - the Gizeh. This style is an iconic classic with signature support and a refined, minimalist style.The upper is made from high-quality, soft natural leather. Anatomically shaped cork-latex footbed Upper: natural leather Footbed lining: suede Sole: EVA. Details: thong with an individually adjustable metal pin buckle.