Abstract: A water ski boot comprising an upper and a sole. The upper includes respective toe and heel portions and the sole extends forwardly on the toe portion to provide a platform like portion extending generally to match the width of the upper. At least one elongated aperture extends laterally of the sole to terminate adjacent the marginal edges thereof. The aperture is such that it provides a sliding-gripping engagement with an elongated abutment on a water ski, whereby the boot may be detachably and operably secured to the water ski.