Birkenstock Zermatt Shearling FE Womens Clogs in Light GreyZermatt is Birkenstock's first true slipper. It features their iconic cork latex footbed, and to keep you extra cozy, it’s fully lined in genuine shearling that will keep your feet warm all winter long. The upper consists of soft genuine wool. Anatomically shaped cork/latex footbed lined with shearling Upper: wool felt Footbed lining: shearling Sole: latex Details: Decorative stitching Upper material: Wool feltInsole: ShearlingFootbed material: Cork