examples of skis 
Water skiing can be done on two skis (twin skis and jump skis) or on one ski (figures and slalom).
Very stable skis with broad tips that have various uses; one of the skis has a second binding so that it can be used as a slalom ski.
Back part of the binding that covers the heel and the bottom of the leg; it reduces sideways motion.
Device that keeps the foot in place on the ski; it is usually made of natural or synthetic rubber and releases the foot easily in the event of a fall.
Skeg at the rear underside of the ski that provides directional stability.
Carefully polished part forming the underside of the ski; it has different shapes (flat, concave or tunnel) depending on the desired effect.
Front part of the binding; it covers the foot and part of the ankle.
Front end of the ski; it curves upward to prevent catching on the surface of the water.