Salomon made the wise decision to bring their narrow fit S/Pro Alpha to the ranks of intermediate and lighter skiers with the Salomon S/Pro Alpha 90 W GW Ski Boots and it was a great call. For skiers with narrower ankles and feet (or even average feet with narrow ankle structures), the S/Pro Alpha heat moldable last is MONEY, giving you the most precise fit you've ever experienced which will translate to better skiing right away.