Advanced-Expert Whether you charge the steepest lines, hit the biggest jumps in the park or carve with race-like precision, advanced to expert level skis, snowboards, boots and bindings are for the more aggressive rider. In skis and snowboards, you'll often find layers of metal, carbon or other stringers for rigidity and power, while advanced to expert level boots and bindings are usually on the stiffer side of the spectrum for rebound and precision steering.