Birkenstock Boston Clogs Womens Size 41 (L10 M8) Taupe Suede Leather Slip On So classic and consistently comfortable, the Boston clog has become a coveted, year-round favorite. Velvety suede lends an effortless feel to the style. These are a taupe color the bright lights make them appear to be gray instead. Good preowned condition, the only blemishes were made by stickers on the insole of heel area on footbed. See these in photos.