The Boston The Birkenstock Boston is a practical classic. Slip them on and you're off! Its sophisticated, individual design means it can be worn all year round, giving this style a legendary status for its seasonal versatility. Equipped with a strap and buckle that can be adjusted across your instep the Boston clog provides a secure fit. The anatomically shaped footbed and roomy toe box makes them comfortable to wear creating a pleasant environment for the entire foot.