The Zermatt is the first BIRKENSTOCK slipper with a removable footbed. This makes it compatible with three types of insoles: the Standard footbed, the Soft footbed, and the Shearling footbed. All three are available individually. In short, the ideal shoe for year-round wear! The version shown is equipped with our Standard footbed. Inspired by natural footprints in the sand, it ensures all-day comfort. The upper is made of soft wool felt. Our model (f) is the Narrow width. Our model (m) is the Regular width. Anatomical cork and latex footbed (Standard footbed) Upper: Wool felt Insole: Suede leather Outsole: Latex Details: Extended clog; decorative stitching; decorative rivets Footbed “Made in Germany”