Dominate winter sports with confidence in the X-BIONIC® ENERGY ACCUMULATOR 4.0 PANTS 3/4. Powered by the 3D Bionic Sphere® System with ThermoSyphon®, these pants optimize sweat management and lock in warmth during rest. Intercooler’s rib technology insulates muscle groups, while Expansion Ribs® provide flexible warmth and unrestricted movement at joints—keeping you dry, warm, and agile for longer performance. Engineered for expert winter athletes, these pants control temperature smartly, so you stay comfortable through every demanding move this autumn and winter.