Birkenstock's Kairo sandals feature an adjustable ankle strap with a foamy, felt lining for your comfort. The cork insole is blended with EVA to be lightweight and flexible. This stylish model is a bridge between the sandal Birkenstock Gizeh and sandal Birkenstock Rio. HAVE A NICE WALK!Anatomically shaped cork-latex footbedUpper: Oiled LeatherLining: suedeSole: EVAPre-owned condition. signs of wear to footbed and throughout from normal use. see pictures for best description.