The backbone of the Mach1 line up, the Mach1 100??s unbeatable features and fit make it a perfect choice for intermediate to advanced skiers who are looking for a comfortable yet uncompromising fit. The C.A.S. liner is now joined by the anatomical, sculpted C.A.S. Shell and C.A.S. Bootboard to give you an impressive out-of-the-box fit, with responsiveness and control to take your skiing to the next level. Quick instep for ease of entry and exit, adjustable canting and flex round out the long list of features that will make this boot a go-to for a wide range of skiers this season.Sizes:24.5 – 30.5* MPFlex:100Volume:100mm Medium VolumeLiner:C.A.S. UltraFitShell:C.A.S. Shell with Quick Instep; C.A.S. Boot boardClosure:4 Micro Alu; 35mm Powerstrap*Size Note: Half sizes only