"The BIRKENSTOCK Boston is a veritable classic that can easily be worn all year round. The Boston has a legendary status thanks to its sophisticated, individual design. Shown in EVA, a synthetic waterproof and lightweight material.  Super lightweight - great for after the gym or the beach." -BIRKENSTOCK US

• Anatomically shaped BIRKENSTOCK footbed made from EVA
• Upper/lining/sole: a single piece of EVA
• Details: waterproof, washable, ultra lightweight
• “Made in Germany”