BIRKENSTOCK. 0071083 0071081. MAYARI. BIRKO-FLOR. SILVER. The BIRKENSTOCK Mayari thong sandal is a jaunty model with a toe loop. The impressive combination of design and wearability will see fashion-conscious men and women through the day with elegance and comfort. The upper is made from the skin-friendly hard-wearing synthetic material Birko-Flor.