Birkenstock 'Gizeh' Birko-Flor Women's Slide Sandal, Matte Cherry Red (39 M EU - 8 to 8.5 US Women) Birkenstock - Women's Birko-Flor Upper - Cherry Red - Matte Finish (Not Lacquered). The iconic slide style, the Gizeh, is known for being the epitome of comfort. Adjustable buckle strap tops an iconic cushioned sandal, designed to exercise foot and leg muscles while providing comfort. Please note: Birkenstock makes the Gizeh Sandals intentionally roomy for added comfort so they tend to run about 0.5 size longer than usual. Most people prefer it this way as the straps can always be tightened if needed! Break-In Period: Birkenstocks are firm under the sole of your foot since they are made of real cork. The cork footbed molds to the individual shape of YOUR feet over time, providing an even support across the entire surface of your foot. Please allow a week or two for your Birkenstocks to adjust to your feet. 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 (instead of yellow) lettering on footbed. Blue shoe box design and black print will be gradually introduced.