The BIRKENSTOCK Boston clog is a veritable classic that can easily be worn all year round. This popular sandal has been given an update in a new material, with a vegan version now available. It is entirely free of animal products, as verified by independent testing laboratories. The upper is made from skin-friendly microfiber. The sandal boasts sophisticated material use with a matte finish that’s reminiscent of natural leather while nevertheless being 100% vegan.