Salomon focuses on adaptive fit, and the last of the new all-mountain frontside X Pro 120 can change in volume by up to 6-mm. The boot combines several performance and fit features, including Twinframe technology and 360° custom shell, which meld a rigid upper shell with a fully-moldable lower shell for power transmission with a pressure-point free fit. The CustomFit 3D Race liner has thermoformable high-density foam and further eliminates pressure points.