The upper material of this great toe sandal is made from soft smooth leather, which is comfortable to wear and conforms nicely to the foot. Information about the footbed: The heart of all models is the original Birkenstock footbed, which is designed to mimic the natural footprint of a foot in the sand. This makes walking in Birkenstock shoes feel like walking barefoot. With its anatomical shapes, it optimally supports your feet during the natural rolling motion of walking. Feet, joints, and back are spared from strain. At the same time, the foot and leg muscles are exercised, promoting health and well-being. The footbed is equipped with a suede leather top layer, which is particularly breathable due to its open pores. The natural raw material cork was chosen for the footbed because it is heat-insulating and provides good cushioning. This shoe is a must-have on warm summer days or during your vacation.