examples of skis [2]
Water skiing can be done on two skis (twin skis and jump skis) or on one ski (figures and slalom).
slalom ski 
Single ski with two bindings and a tapered rounded tail; it has a long fin to provide stability during tight turns.
back binding 
Device that keeps the back foot in place on the ski; it is often identical to the front binding but can also be a simple toe strap.
front binding 
Device that keeps the front foot in place on the ski; it is usually shaped like a boot and made of natural or synthetic rubber.
jump skis 
Very sturdy skis that are longer and wider than other types of skis; they provide the stability necessary for performing jumps from a jump ramp.