For the advanced-to-expert all-mountain skier who refuses to leave anything on the table, the Salomon Men's S/Pro Supra S BOA 120 delivers a dialed-in blend of stiff, responsive power and micro-tuned comfort—because precision shouldn't come at the cost of pain. The single-dial BOA® Fit System puts lower-shell customization at your fingertips, while the Power Spine and Exowrap work as one to lock your foot in place, eliminating unwanted movement and transferring every ounce of energy directly to the edge. Inside, the S/Pro CF Expert 4D liner molds to your foot with pre-shaped foam, adaptable Talyn®, and an elastic toebox, while the removable Custom Tongue adds edgeless relief where you need it most. Backed by aluminum buckles, a secure Velcro strap, and the Light2 Footbed for lightweight comfort, this stiff flexing boot is your ticket to charging harder, longer, and with total confidence from first turn to last