The Salomon S/PRO SUPRA BOA X90 Ski Boots redefine comfort and performance with the innovative BOA® Fit System, allowing for micro-adjustable, precision foothold throughout the day. Designed to challenge traditional boot construction, these boots feature a Custom Shell HD for rapid personalization and enhanced control on the slopes. With heat-moldable liners, Gripwalk soles for improved walking comfort, and a flex rating of 90, these boots provide the perfect combination of control and comfort for intermediate skiers.