An improvement in an attachment for release ski bindings enabling the skier to selectively decide the mode of skiing, namely downhill skiing or cross-country skiing. The attachment includes a sole plate which holds the ski boot onto the ski. The sole plate has a connecting piece fixedly connected thereto and is pivotally secured to a ski binding element about an axis extending transverse of the longitudinal axis of the ski. The connection between the sole plate and the ski binding element is a releasable connection to facilitate the skier's selection of the mode of skiing.