Birkenstock Women's Gizeh Vegan Thong Sandal Microfiber Imported Synthetic sole Birkenstock&reg; Size Chart Please be advised that the Birkenstock&#174; Narrow width accommodates both traditional narrow and medium widths. Click here for more information about Birkenstock's widths. An animal-free version of the popular Gizeh clog. Microfiber upper and lining. Adjustable buckle strap. Contoured cork footbed conforms to the shape of your foot and features pronounced arch support, a deep heel cup, and roomy toe box; lined with microfiber. Light and durable EVA outsole. Made in Germany. Measurements: Weight: 5 oz Product measurements were taken using size 36 (US Women's 5-5.5), width Regular. Please note that measurements may vary by size.