The O'Brien Vortex 65.5" Combo Waterskis are Big-Daddy wide-body skis. The extra surface area is hugely beneficial to larger skiers and provides a tremendous amount of lift for super easy deep-water starts and big carving turns. The large surface area also allows for skiing at slower, more comfortable boat speeds and requires less horsepower (and fuel) to get skiers up. Length - 65.5" (166 cm) X-7 Bindings - Pinch-slide adjustment for effortless entryFoot Size - Men's US 4.5-13Wide Forebody Ski - Increased surface area for easier starts and reduced dragDual Tunnel Design - Slices through rough water for a smooth, stable rideNylon Fins - Great hold on the water and easy on the boat interior | O'Brien Vortex 65.5" Combo Waterskis with X-7 and Rear Toe Plate Bindings | The House