Birko-Flor® upper with rubber sole Birko-Flor is a skin-friendly, tear-resistant and easy-to-care-for synthetic material which is exclusively used by BIRKENSTOCK; Made in Germany; Dual adjustable velcro vamp and back strap; Anatomically shaped footbed; Regular fit; This item is not available for international export; Revolve Style No. BIRF-MZ52; Manufacturer Style No. 1019200