Fischer Soma Vacuum RC4 Pro 130 Ski Boots (U10112)

In top-tier motorsport, drivers' bucket seats are cast using an exact mold of their bodies so that driver and machine become one single entity. The Fischer Soma Vacuum RC4 Pro 130 translates this exclusive extreme customization technology to the mountain. Its "bodywork" is made of Vacu-Plast, a high-tech polymer that, through a heating and compression process in-store, adapts exactly to the volume of the foot. This allows the "track width" (last) to be adjusted from a radical 93 mm to a more forgiving 103 mm.

The result is a cabin with zero suffocating pressure points, yet not a single millimeter of slack. This guarantees that the 130-flex "suspension" transmits steering commands instantly, eradicating any trace of understeer in high-speed corners.

Additionally, this chassis features Soma-Tec biomechanical alignment, which maintains the legs' natural "V" stance. Acting like a perfect camber and toe adjustment in suspension geometry, it protects the knees from extreme forces and centers the mass directly over the ski for devastating edge grip.

Technical Parameters

• Recommended level: Expert / Competition (100% On-Piste / High Performance).

• Flex Index: 130 (Ultra-rigid racing suspension for immediate response).

• Last (Internal width): Adaptable from 93 mm to 103 mm (Vacuum Full Fit Technology - Total shell customization).

• Shell Material: Vacu-Plast (Heat-moldable polymer that retains shape and is extremely stable at low temperatures).

• Biomechanical Alignment: Soma-Tec Technology (Anatomical "V" stance for maximum acceleration and joint protection).

• Liner: Ultralon Racing / Vacuum Fit Liner (100% heat-moldable, high density, excellent heel retention).

• Buckles: 4 low-profile Aerodynamic alloy buckles.

• Power Strap: High-performance Velcro (45 mm) for an immovable tibial lock.

• Soles: Standard Alpine ISO 5355.

• Manufacturer reference: U10112.