The X8 Classic ski boot is designed for fitness-oriented skiers and young race skiers. Its race-inspired construction combines technology with our athlete-tested X-ium series for enhanced precision and more efficient power transfer. The accessible flex is suitable for fitness and recreational skiers. The sole, tailored for classic skiing, provides a natural rolling effect for an efficient kick, while the firm hold and thermoformable design ensure a precise, enveloping fit for ultimate comfort and control. The Dual Core Technology allows for targeted stiffness in the boot for optimal responsiveness without negatively impacting weight. The sport sole features Tech Grip for comfortable walking and central inserts for maximum precision and control on the ski. WINTHERM® offers a breathable, micro-perforated membrane that reflects heat back to its source, providing incredible temperature regulation, comfort, and warmth. Thermoformable liners adapt to your foot using heat, ensuring a perfect fit and great comfort. Upper construction: 3D-injected Dual Core. Lower construction: Performance PVC. Heel construction: 3D plastic reinforcement. Lining: Polyester + active Wintherm membrane. Lacing system: Laces. Sole: SPORT. Color designation: Black/Blaze Red.