examples of skis [1]
Water skiing can be done on two skis (twin skis and jump skis) or on one ski (figures and slalom).
twin skis 
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.
heelpiece 
Back part of the binding that covers the heel and the bottom of the leg; it reduces sideways motion.
binding 
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.
fin 
Skeg at the rear underside of the ski that provides directional stability.
bottom 
Carefully polished part forming the underside of the ski; it has different shapes (flat, concave or tunnel) depending on the desired effect.
toepiece 
Front part of the binding; it covers the foot and part of the ankle.
tip 
Front end of the ski; it curves upward to prevent catching on the surface of the water.