Birkenstock 'Gizeh' Women's Birko-Flor T-Strap Thong Sandal, Tango Red (37 M EU - 6-6.5 US Women) Birko-Flor upper, a unique material made of acrylic and polyamide felt fibers. Imported Euro Size 37 M. US Women Size 6 to 6.5. Fits regular to wide width foot. Classic cork footbed. Made by Birkenstock Germany. Easy care Birko-Flor upper in a classic thong silhouette with an adjustable buckle for the perfect fit. The suede lined, contoured footbed will mold to the shape of your foot creating a custom footbed that supports and cradles you each and every step. Neutral heel profile and deep heel cup keeps the natural padding of your foot where it belongs, under the heel, distributing your body weight more evenly. *** Product update: newly updated model (latest production 08/2016); GIZEH may now ship in newly designed Birkenstock shoe box (new blue shoe box design with handy size measuring guide printed on inside of shoe box). Sandals may now also come with black (not yellow) lettering on footbed. Original white shoe box design and yellow print will be gradually phased out. ****