The OBrien 65.5" Vortex Combos are considered a Big-Daddy wide-body pair. These skis are designed for super easy deep-water starts and big, carving turns at minimal effort. The extra surface area reduces drag and provides a huge amount of lift to get bigger skiers up on plane with ease. The large surface area also allows for skiing at a slower, more comfortable boat speed. A side benefit is it takes less horsepower to get skiers on the Vortex up and out of the water, making it easier to teach deep-water slalom starts. When theres any doubt about getting out of the water on a pair of skis, go with the OBrien Vortex Combos. Bindings: 5-13. | O'Brien 65.5" Vortex Waterski with X-7 Bindings | The House