The Salomon Men's X Pro 120 Ski Boots are ultralight but deliver heavyweight skiing performance thanks to their Twinframe 2 shell design and its exclusive polyamide chassis. Designed for intermediate to advanced skiers who demand performance, the Twinframe2 design delivers improved rebound and dynamic flex, while oversized pivot provides efficient transmission. A 15% lighter chassis material and lightweight foams make X PRO the one of the lightest heavy duty boots out there, allowing for effortless skiing. Plus, when it comes to fit, its combined Custom Shell 360° shell and My CustomFit 3D liner make for a totally custom fit, inside and out. With the X-Pro, your ski trip just got booted.