Built on the trusted fit of the original Alpha, the S/Pro Alpha BOA (R) 130 introduces Salomon 's revolutionary ExoDrive construction and Powerlink lower pivot, for unmatched energy transmission, precision and confidence. The 98 mm last ensures a snug fit, while the cuff-mounted BOA (R) Fit System offers micro-adjustable precision and control. Salomon S/Pro Alpha C BOA 130 Ski Boots | 27.5 | Christy Sports