The Gizeh eggshell Big Buckle EVA version from Birkenstock, comes with their popular Big Buckle made from corrosion-resistant plastic. Modeled on the cork sandal, it is made from the especially light and highly flexible material EVA. The high-quality, odor-neutral EVA has been tested for harmful substances and combines numerous positive attributes: it is very light, highly elastic, water-resistant, and skin-friendly and offers the comfort you have come to expect from Birkenstock.