There are provided a leaf row in which a plurality of leaf plates are arranged in the thickness direction of the row in such a way that the respective one end faces of the leaf plates are trued up and a leaf plate drive mechanism that drives each of the plurality of leaf plates in such a way that the one end face approaches or departs from a beam axis. The binding is equipped with a ski brake which can be demounted and remounted. Each latching portion includes a latching leg and a retaining hook section formed at a bottom end of the latching leg.