The Fischer RC4 120 MV VAC BOA men's ski boots usher in a new era of high-performance on-piste skiing by blending race-like precision with the revolutionary BOA® closure system. Featuring a responsive 120 flex, a 100 mm medium volume last, and the VACUUM heat-moldable shell, this model guarantees a millimeter-precise foot wrapping without hot spots, delivering direct, lossless power transmission, absolute lateral control, and premium all-day comfort.