The Fischer My Curv 90 Vacuum Full Fit Ski Boots are a narrow-lasted, performance boot with a moderately stiff flex, ideal for the woman who wants precision in her skiing without going to an all-out race flex. The RC4 Curv shell design, developed in conjunction with elite athletes, offers a degree of control and precision previously only available to World Cup skiers, as well an an anatomic fit that provides both comfort and heel hold straight out of the box. As with the other Vacuum Full Fit shells, the My Curv 90 is fully heat moldable in the shop, and can be made narrower as well as wider. Last: 97 mm A narrow lasted boot designed for those with lower volume feet Thermoshape AFZ Curv Liner Heat moldable with Active Fit Zones, designed to support the foot in three defined function zones. Shell TPU (Thermoplastic Urethane) RC4 Curv The shell’s ergonomic design positions the foot properly for stability, control and power transfer. RC Pro W Buckles Larger, rounded buckle shape for women’s boots allows better leverage for opening and closing buckles.