The BIRKENSTOCK Bakki is soft and cuddles your feet thanks to its turnover top with high-quality genuine shearling lining. Its cork sole instantly gives it away as a true BIRKENSTOCK original. Slip on this perennial classic in the winter to keep your feet warm.!!!! Upper: suede Footbed lining: suede Sole: light sole made from synthetic materials All of my items were purchased by me for individual use. They either did not suite my need or have been gently used and rotated through my use.