With its 105 flex and mid-volume fit, the RC4 105 MV BOA offers optimal control and comfort for ambitious piste skiers and freeriders. The BOA® Fit System – H+i1 ensures unmatched adjustment and secure hold, while VACUUM Fit technology adapts the shell precisely to the shape of your foot. The GripWalk® sole improves walking comfort and traction off-piste – for a perfect skiing experience from the first to the last turn. The newly developed Vacuum Fit +Plus liner offers a customizable fit with high comfort and optimal control thanks to thermoformable materials and a D3O® tongue. The asymmetrical tongue ensures a perfect fit and first-class shock absorption on the slopes.