The blue footbed is based on the principle of barefoot walking - and that also applies to our Black Edition of the classic product. It is inspired by the healthy imprint of a foot in the sand, providing a natural environment for the foot. Thanks to its high edges, it cradles and stabilises the heel of the foot. It also supports the natural shape of the arches. That's why this footbed is ideal for anyone who also wants to enjoy the unique BIRKENSTOCK comfort in closed shoes from other manufacturers.