The Pro Tour is the perfect entry-level slalom ski for those who want to go out, carve around, and have some fun on the water. Its smooth and stable performance stems from the dual tunnel design, making it one of the best skis for beginners to hop on and build their confidence. O'Brien Pro Tour 64" w/ Z9 & RTS Aqua Slalom Package. The 64" comes with XS/S Z9 bindings made for shoe sizes up to 7. The 68" comes with Standard size Z9 bindings made for shoe sizes 7-12. Dual Tunnel Design - Slices through rough water for a smooth, stable ride Carve Fin Z-9 Bindings