Birkenstock Boston Soft Foot Bed Sandals in Mink. Crafted in Germany featuring a pure leather suede upper and single strap buckle closure, these Birkenstock Sandals are one of the finer luxuries in life. Underfoot, the brand's soft footbed is made using their signature cork which contours to the foot and offers an ergonomic fit. Dressed in a Mink tone, this style delivers an even balance between bold and versatile, perfect for the warmer months or chilling at home.