Birkenstock Women's Zermatt Shearling Wool Felt Slippers 1017545 Color: Plaid White Medium/Narrow Fit Sizes Available: EU 36 / US 5 / UK 3.5 (*Men's US 3) EU 37 / US 6 / UK 4.5 (*Men's US 4) 100% AUTHENTIC Birkenstock in Original Box The BIRKENSTOCK Zermatt is our first slipper with a removable footbed, allowing you to choose between three different insoles. You can choose from the Standard Footbed, the Soft Footbed and the Shearling Footbed. All three insoles can be ordered separately. Perfect for all year round! This basic version of this design features our Shearling Footbed. It comes with a snug shearling lining to keep your feet cozy when the temperatures drop. The upper is made from soft wool felt. Anatomically shaped cork-latex footbed (Shearling Footbed) Upper: wool felt Footbed lining: shearling Sole: latex Details: clog with extended shaft; decorative stitching; decorative rivet Footbed “Made in Germany” Upper material: Wool felt Wool felt counts among the oldest textile materials in the world and is the typical upper material for slippers. Footbed material: Cork Cork is a sustainable material extracted from the bark layer of the cork oak. This natural product is insulating and offers very good cushioning.