Suede the Boston clog a classic among the Birkenstock models is shown here in a particularly soft and comfortable version made of high-quality genuine suede warm feet in style thanks to the natural lamb fur in the insole and in the inner lining of the straps the ideal shoe for warm winter evenings by the fireplace!anatomical cork and latex footbedsuede leather upper with lamb fur lininglamb fur insoleeva solelamb fur details individually adjustable metal pin buckles suede uppersuede leather is a leather with a slightly polished surface that is soft and gives a pleasant sensation to the touch, it also absorbs moisture very well. color mink