1. Understanding the specifics of ski touring boots

A. Flex and rigidity

The performance of a ski touring boot is greatly influenced by its stiffness, often expressed in terms of "flex". Flex indicates how easily the boot bends. For advanced skiers, a high flex (generally between 100 and 130) offers better power transmission between leg and ski, essential for technical descents. However, too high a flex can limit comfort and mobility when climbing. So it's crucial to find a balance that suits your skiing style and the terrain you frequently explore.

B. Ski and walking modes

Ski touring boots feature a system for switching between ski and walk modes. This mechanism adjusts the angle of the collar for greater amplitude of movement when climbing. A boot with good travel (at least 60 degrees) is ideal for long ascents and varied terrain. Make sure the rocker system is sturdy and easy to handle, even when wearing gloves.

C. Binding compatibility

There are two main types of bindings for ski touring: insert bindings and alpine-type bindings. The former are lightweight and require boots with specific inserts. The latter are heavier, but offer greater downhill safety and are compatible with a wide range of boots. Check the compatibility of your boots with the type of binding you plan to use.

2. Choosing the right size and fit

A. Foot measurement and boot volume

Ski touring boots need to be accurately sized to avoid chafing and painful pressure points during long days in the mountains. We recommend measuring your feet at the end of the day to take account of their natural swelling. Also take into account the volume of the boot, as some models are better suited to wide or narrow feet.

B. Importance of shell and liner

The shell must offer firm support without restricting blood circulation. Materials such as Grilamid or Pebax are popular for their optimal weight-rigidity ratio. The liner, on the other hand, must be comfortable and thermoformable if possible, for personalized adaptation to the shape of your foot.

C. Closure system

Fastening systems (buckles, laces or Velcro) must enable a precise, easily modifiable fit. Micro-adjustable buckles can be a major asset for fine-tuning the fit and improving foot support.

3. Innovative materials and technologies

A. Lightness vs. durability

For advanced skiers, it's essential to strike a balance between lightness and durability. Advanced materials like carbon can offer excellent stiffness while reducing weight, but they can also increase boot cost.

B. Thermal insulation

Good insulation is crucial for long high-altitude excursions. Check the quality of liner insulation and the presence of breathable, waterproof membranes like Gore-Tex, which protect against the elements while allowing your feet to breathe.

C. Additional technologies

Some boots incorporate innovative technologies such as Vibram soles for better grip on approach walks, or quick-adjust systems that facilitate adjustments along the way.

Choosing the right ski touring boots is an investment in your comfort and performance in the mountains. Take the time to try them on with the socks you'll be using, and don't hesitate to consult a specialist for personalized advice. With the right equipment, the vast expanses of snow become an exceptional playground for the adventurer in you.