The Birkenstock Zermatt Shearling FE is Birkenstock's first true slipper, featuring their iconic cork latex footbed for ultimate comfort. To keep your feet extra cozy, it is fully lined in genuine shearling, ensuring warmth throughout the winter. The upper is crafted from soft, genuine wool felt. These slippers boast an anatomically shaped cork/latex footbed lined with shearling, a wool felt upper, and a durable latex sole. Details include decorative stitching. Upper material: Wool felt Insole: Shearling Footbed material: Cork