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. Perfect for all year round! This basic version of this design features our Standard Footbed. It replicates the natural print made by a foot walking on sand and will see you through the day in comfort. The upper is made from soft wool felt.