The Birkenstock Boston Men's Leather Clogs combine a sleek feel with a cushioned insole. natural style and incredible comfort: they envelop the foot in soft suede cork and soft foam. Polished leather upper adds a glossy look and soft suede gives the foot a smooth feel. Underfoot, a cork footbed follows the contours of your foot creating a feeling of naturalness in accordance with your proportions. There are also layers of soft foam and EVA underneath for even more comfort..