For the advanced to expert skiers who demand high performance with active adaptability, the Salomon Men's S/Pro Delta BOA 130 Ski Boots ski boots feature the BOA® Fit System for easy, micro-adjustable precision that helps you push your limits without sacrificing all-day comfort. The polyurethane shell delivers reliable wrapping and powerful transmission, while the Power Spine links cuff and shell for explosive response and support—enhanced by a Calf Adjuster that accommodates higher, wider calf shapes for personalized comfort on every descent. Inside, the My Custom Fit 4D liner combines pre-shaped foam with adaptable Talyn® and an elastic toe box, backed by a Sensitive2 footbed for precise steering and stability. Finished with durable aluminum buckles and a secure Velcro strap, this boot gives expert skiers the locked-in feel, calf-friendly fit, and confident control needed to charge any line from first chair to last.