Birkenstock Honolulu EVA Flop Flops in Zinnia NWT. Sizes: 44, 45, 46. The BIRKENSTOCK Honolulu is a sporty thong sandal with embossed straps. Modeled on the cork sandal, this sandal is made from light, flexible and waterproof EVA. Anatomically shaped BIRKENSTOCK footbed made from EVA Upper/footbed lining/sole: a single piece of EVA Details: waterproof, washable, ultra lightweight. Brand new, never worn, shops with original box.