The 2021 Ronix Supreme Wakeboard boot is new for this season. The boot has 3 adjustable Super Straps that allows the rider to customize the fit exactly to their riding style. If you like a stiffer boot, pull the straps down and the boot locks in, if you want a softer flex, loosen the middle strap and the boot will flex. Easy enough to change as you. The Supreme Boot has the high-tech intuition heat moldable liner to ensure you have the perfect fit.