The new high-performance X Max 110 W features a customizable shell in the hard-to-fit calf area, designed for comfort without losing power. 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 Custom Fit Pro liner has thermoformable high-density foam to further eliminate pressure points.