The Fischer RC4 The Curv 120 Vacuum ski boot promises a winning combination of lightweight performance and exceptional comfort, a feat often elusive in high-performance footwear. Targeted towards skiers with medium-wide feet, this boot boasts a pre-shaped, thermoformable liner for a truly customized fit. Its innovative design prioritizes both responsiveness on the slopes and all-day comfort, addressing a key need for skiers who demand both performance and ease of use.This review delves into the details of the RC4 The Curv 120 Vacuum, examining its lightweight construction, innovative IVA Com technology for superior heel hold, and the highly-praised "great wall soles" that deliver exceptional grip. We'll explore the ease of entry and exit, a significant advantage for skiers, and discuss the overall comfort level, noting both the positives and a minor subjective point regarding fit. Ultimately, we assess whether this boot delivers on its promise of high-performance comfort for a wider range of foot shapes.
Pros And Cons
- Sporty and lightweight
- High-performance
- Ideal fit for medium-wide feet
- Excellent fit and perfect heel hold
- Great grip
- Anatomical fit with a 105 mm sole
- Easy to put on and take off
- Comfortable
- Felt a little empty in the sole and upper parts of the boot
- Canton (likely referring to a part of the boot) is not fixed
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Lightweight Design and Fit
The Fischer RC4 The Curv 120 Vacuum is marketed as a lightweight, high-performance ski boot, ideal for medium-wide feet. Its preformed 3D thermoformable liner promises a customized fit. The boot's construction prioritizes both comfort and responsiveness on the slopes.

The lightweight nature of the boot is emphasized throughout the review. This reduces fatigue during long ski days and enhances agility. This makes it particularly attractive to skiers who value both performance and comfort.

Exceptional Grip and Heel Hold
The boot incorporates IVA Com technology for excellent fit and heel hold. The reviewer specifically mentions the 'great wall soles', praising their superior grip on various snow conditions. This feature enhances control and confidence while skiing.

The sole's design is crucial for stability and maneuverability. The secure heel hold prevents slippage, a common issue in other boots, while the grip ensures excellent traction. This allows skiers to maintain control at higher speeds.

Ease of Use and Comfort
The reviewer highlights the ease of putting on and taking off the boot, comparing the experience to slipping into a slipper. This feature significantly adds to its convenience, especially when dealing with cold weather or time constraints.

The boot's comfort is stressed again, noting the wide fit, particularly in the heel and sole areas. This design caters to a wider range of foot shapes and sizes.
Fit and Feel Considerations
While praising the overall comfort, the reviewer notes a slightly empty feel in the sole and toe box areas for their foot. This subjective experience might vary depending on individual foot shape and preference.

Despite this minor point, the boot is described as comfortable and secure. The reviewer comments on the easy entry and exit from the boot.

Overall Assessment and Conclusion
The Fischer RC4 The Curv 120 Vacuum ski boot offers a compelling combination of lightweight design, secure fit, and ease of use. The superior grip and comfortable wide fit make it a strong contender for skiers prioritizing comfort and performance.

While the reviewer experienced a slight emptiness in the fit, this is a subjective point that may not apply universally. The boot's strengths, including its lightweight design, excellent grip, and convenient entry/exit, make it a worthy addition to the market. The overall ease of use and comfort are significant selling points.