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1. Understanding the importance of flex
The "flex" of a ski boot indicates its rigidity. Flex values generally range from 60 for beginners to over 130 for experts. For top-level skiers, a boot with a high flex is recommended, as it offers better transmission of forces and more precision in turns. It's essential to choose a flex suited to your weight, physical strength and skiing ability. For example, a heavy, powerful skier will benefit from a higher flex, while a lighter skier might prefer a slightly lower flex so as not to sacrifice comfort and maneuverability.
2. Size and fit: the keys to performance
Ski boot size is crucial to avoid painful pressure points and unwanted foot movement. Ski boots need to be tight enough to hold the foot in place, but without compromising blood circulation. A good way to test the fit is to remove the liner, place your foot in the shell, and check that there's about one to two centimetres between your heel and the shell when your toe lightly touches the front. This margin is important to allow your toes to move slightly when the shoe is fully closed.
It's also essential to consider the "last", i.e. the width of the shoe. Manufacturers generally offer lasts ranging from 97 mm (narrow) to 102 mm or more (wide). Choosing the right last according to the width of your foot is crucial for comfort and to avoid circulation problems or pain caused by a shoe that's too tight or too loose.
3. Choose according to your skiing style
Ski boots vary according to skiing style. For traditional downhill skiing, rigid, precise boots are preferred. For freeride or off-piste skiing, boots with greater ankle flex and walking comfort are often preferred. Touring skiers will opt for lighter boots, with specific features such as "tech" binding inserts and greater range of movement in walking mode.
4. Innovative materials and technologies
The materials used in the manufacture of ski boots can greatly influence their weight, durability and performance. Polyurethane shells are common and offer a good balance between performance and durability, while lighter materials such as Grilamid are often used for touring boots. What's more, some top-of-the-range models incorporate thermal molding technologies that allow complete customization of shell and liner for a perfect fit.
5. Additional features to consider
- Closuresystems: Metal buckles offer greater durability and a more precise fit, while rack-and-pinion systems can offer faster, easier closure.
- Slippers: Opt for thermoformable slippers that can be heated and molded to the shape of your foot for added comfort and support.
- Soles: Non-slip soles are essential for walking on snow and slippery surfaces, especially for backcountry skiing and hiking.
In conclusion, the choice of ski boots for an advanced athlete should be guided by an understanding of his or her specific needs in terms of performance, comfort and skiing style. A well-chosen boot will help you ski with greater precision and confidence. Don't forget to consult an in-store specialist for personalized advice and to test several models before making your final choice.
