The Salomon S/Pro Supra BOA X100 Ski Boots offer all the benefits of BOA in a more palatable flex for intermediate to advanced skiers. The BOA® Fit System wraps around the instep better than buckles ever could, removing pressure from the top of your foot and improving power transfer between you and your skis. The user-friendly dial makes on-the-fly adjustments easy, and it all comes with classic Salomon quality and attention to detail.