The Birkenstock Boston is made of blue leather. It is a robust mule with an unsophisticated look. The upper is made of blue leather and easy to maintain because of the smooth structure. The cork foot bed comes with the well-known deep heel indentation and toe grip for extra walking comfort. And the by Birkenstock anatomically shaped foot bed ensures the most optimal support of the feet. Above the instep a strap is attached to adjust the mule to your foot. The mule can be worn inside the house as well as outside. The Birkenstock Boston blue leather is available in the width ‘broad and normal’.