The snow-board has a front and back binding (13) each of which is fixed to a top circular disc (12) which revolves on a bottom circular disc (11) fixed onto the board (10). The back and front binding can be adjusted in their crosswise position. The revolving movement of the top circular disc is restricted at the back and front by thrust-pieces by roughly 40 degrees from their transverse position. The bottom circular discs are on a backward-sloping plane. A smaller concentric disc (1a) is positioned on each bottom disc (11) and is contained in a circular hole in the top disc. The rotary movement is restricted by two lugs (11b) on the smaller disc (11a) or by protuberances (12a) and free sectors (12b) on the top disc. ADVANTAGE - The mobile mounting of the bindings enables the snow-boarder to swing his body backwards or forwards.
