The "Extra High Volume" fit of the Tecnica Mach Sport 120 EHV Ski Boots is designed to give the super high volume foot a welcome break. Formally the province of the Ten.2 HVL, the new Mach Sport fits similarly but adds a grindable C.A.S. bootboard so your bootfitter can create extra instep height in a few minutes. Solid, 4-buckle overlap construction makes the Mach Sport a real performance ski boot and a much better choice than many "comfort" boots designed for wide feet.