The Birkenstock Boston Grip features the original Super Grip sole. The Super Grip sole consists of two compounds: a cushioning EVA midsole and a slip-resistant rubber tread sole. Combined, this advanced, non-abrasive, long lasting feature is ideal for kitchens, hospitals, laboratories and more and is particularly resistant to oil and grease. In addition, the Birkenstock Boston Super Grip features the original Birkenstock Footbed – unsurpassed for support and comfort – the perfect footwear for both professional and lifestyle use. And as more hospitals and laboratories go back to requiring basic white or black as part of the uniform requirements, the Birkenstock Boston Super Grip provides a premium choice in professional footwear.