BIRKENSTOCK. 1018126. BUCKLEY SHEARLING SUEDE LEATHER. BLACK. The BIRKENSTOCK Buckley is a semi-open moccasin-style clog that s instantly recognizable as an authentic BIRKENSTOCK original thanks to its exposed cork footbed. Here the classic model comes in a particularly cozy version with genuine shearling and a statement buckle. The perfect shoe for chilly evenings. The upper is made from soft suede leather.