The BIRKENSTOCK Zermatt is our first slipper with a removable sole, allowing you to choose between three different soles. You can choose between the standard sole, the soft sole and the sheepskin sole. All three insoles can be ordered separately. Perfect for the whole year! The basic version of this model has our Shearling sole. It has a shearling lining to keep your feet warm when temperatures drop. The upper is made of soft wool felt.Our (f) model is narrow width. Our (m) model is the regular width.- Anatomical cork-latex sole (sheepskin sole)- Upper: wool felt- Sole lining: shearling- Sole: latex- Details: clog with extended shaft; decorative stitching; decorative rivet- Sole "Made in Germany".