The BIRKENSTOCK Boston is a practical classic that can easily be worn all year round. The Boston has a legendary status thanks to its sophisticated, individual design. Slip them on and you're off! The Boston clog is equipped with a strap and buckle that can be adjusted across your instep– and thus provide a perfect fit. The anatomically shaped footbed and roomy toe box makes them comfortable to wear creating a pleasant environment for the entire foot. These features make the clog a comfortable companion, whether indoors or out. Every pair of Birkenstocks is made from the highest quality materials. Oiled Leather Upper / Classic Footbed - Suede Lined Has a visible grain and naturally occurring colour irregularities that are not removed in order to preserve the matt surface. The essence of all our shoe models is the original BIRKENSTOCK footbed, which is inspired by the natural imprint of a foot in the sand and feels just like walking barefoot. Its anatomical shape ideally supports the natural walking action of your foot. Your feet, joints and back are protected. At the same time, your foot and leg muscles are exercised, and your health and well-being benefit as a result. Oiled leathers are designed to appear stressed and rustic looking. Leather conditioner will minimise this look. A lot of this occurs when the shoes are in transit as the paper rubs against the shoes and the shoes themselves jostle one another in the box creating scratches or scuffs on the leather. This can be worked out using your fingertips. The leather can appear dryer(lighter) in patches where the oil has dispersed or darker where the oil has settled. When you bend the straps or move the leather the colour will change frequently showing up crackly as the oil disperses.