The Mach1 90 MV is perfect for the intermediate to advanced skier that is looking for the fit and performance of the medium volume Mach1, with a more forgiving flex. The Mach1 90 MV features the same anatomical C.A.S. Shell and Bootboard as well as stance and cuff but is coupled with a more comfort oriented, N.F.S. QuadraFit liner. The liner features advanced materials to give the boot a great, welcoming feel yet still maintains great level of performance. The great out-of-the-box fit, and 90 flex make this a great blend of control, comfort and value.