Birkenstock Women's Zermatt Shearling SlipperSize Chart Cozy up to wool and shearling. The Zermatt slipper gives you an elevated indoor option in wool herringbone, lined in genuine shearling for a soft landing every time. An original cork latex footbed gives you the support you need, with a latex rubber sole for room to room traction. Contoured cork latex footbed creates custom support with wear Wool felt upper Cozy, genuine shearling footbed lining Latex rubber sole for added traction Footbed