BIRKENSTOCK. 1017 650 1017 651. BOSTON SHEARLING SUEDE LEATHER. STONE COIN. The BIRKENSTOCK Boston is a classic go-to clog. The Boston has a legendary status thanks to its sophisticated individually adjustable design. This classic model comes in an especially cozy version with genuine shearling lining the footbed and the upper. The perfect shoe for cozy winter evenings The upper is made from soft suede.