Birkenstock Boston Professional Super Grip Black Leather Clog 0060194The BIRKENSTOCK Boston clog is a veritable classic that can easily be worn all year round. Thanks to its two components, the sole promotes stability and comfort. It comprises a cushioning midsole made from EVA and a nonslip outsole made from genuine rubber. The upper is made from high quality, soft natural leather. Contoured cork latex footbed creates custom support with wear Natural leather upper Suede footbed lining helps keep you comfortable