evo.com | Tecnica Alpine Ski Boots > Add a BOA(R) lower closure system to an already great boot, and what do you get? The Tecnica Mach BOA MV 105 Ski Boots are just as powerful, comfortable and warm as before but the BOA(R) distributes pressure over the instep and forefoot better than buckles and is instantly adjustable with your gloves or mitts on. We were BOA(R) sceptics at first, but a season or two on them has us convinced. Shell C.A.S. Polyurethane Last: 100 mm A mid-volume last designed for average feet. 35mm Velcro Power Strap C.A.S. Boot Board The removable C.A.S. boot board offers plenty of thickness for grinding and a grid pattern for reference. Flex: 105 A stiff flex for expert skiers who require quick rebound and ski response. | Women's Tecnica Mach BOA MV 105 Ski Boots 2026 - 25.5 in Purple