The Birkenstock® sandals that started it all live up to their reputation with extra comfortable molded leather and cork insoles, now with luxe and supple, vegan uppers. Germany. Fit is Medium/Narrow: A-B Width. Euro whole sizes 36-42. 36 (US 5-5.5), 37 (US 6-6.5), 38 (US 7-7.5), 39 (US 8-8.5), 40 (US 9-9.5), 41 (US 10-10.5), 42 (US 11-11.5).