To correct the postures of the feet by bringing the knees of both feet riding on a snowboard closer to each other.

Connectors 21 are fixed to the rear surfaces of the plate soles 30 of the snowboard boots 1. The front side which is the toe side of these connectors 21 and the rear side which is the heel side thereof are fixed by binding devices. The boots are so constituted that the front surface 60 of the plate soles 30 forms an acute angle θ from the front surface 62 of the snowboard 47. This acute angle θ is preferably 2 to 5°.